Qamar Hussain Babar - Academia.edu (original) (raw)
Papers by Qamar Hussain Babar
Transactions on Electrical and Electronic Materials, 2016
The surface morphology of the front transparent conductive oxide (TCO) films plays a vital role i... more The surface morphology of the front transparent conductive oxide (TCO) films plays a vital role in amorphous silicon thin film solar cells (a-Si TFSCs) due to their high transparency, conductivity and excellent light scattering properties. Recently, plasma textured glass surface morphologies received much attention for light trapping in a-Si TFSCs. We report various plasma textured glass surface morphologies for the high efficiency of a-Si TFSCs. Plasma textured glass surface morphologies showed high rms roughness, haze ratio with micro-and nano size surface features and are proposed for future high efficiency of a-Si TFSCs.
Nano-Structures & Nano-Objects
Abstract The cost-effective modernized technology, the sol–gel method was employed to synthesize ... more Abstract The cost-effective modernized technology, the sol–gel method was employed to synthesize SnO2 nanotubes. Different characterization techniques were carried out including X-ray diffraction (XRD), field emission scanning electron microscope (FESEM), energy-dispersive spectroscopy (EDX), X-ray photoelectron spectroscopy (XPS), and cyclic voltammetry (CV) measurements; to analyze the prepared nanotubes as a promising electrode material. The tetragonal phase formation in SnO2 was confirmed from the XRD pattern. FESEM provided the nanotube morphology of the as-synthesized sample. EDX analysis profiled the elemental analysis depicting the presence of constitutional elements i.e. Sn, C, and O in the specimen. The valence states of SnO2 nanotubes were perceived by XPS analysis. Additionally, the ongoing electrode reactions were investigated by CV measurements which revealed the anodic/cathodic peaks. High specific capacitance of about 1291.15 F/g was achieved from CV analysis. The superior electrochemical performance was perceived by all the obtained results which make the SnO2 nanotubes a favorable electrode material for futuristic battery applications.
BJPsych Bulletin
Aims and method To investigate the experiences and support needs of consultant psychiatrists foll... more Aims and method To investigate the experiences and support needs of consultant psychiatrists following a patient-perpetrated homicide, an anonymous online survey was sent to all consultant psychiatrists registered as members of the UK's Royal College of Psychiatrists. Results Of the 497 psychiatrists who responded, 165 (33%) had experienced a homicide by a patient under their consultant care. Most respondents reported negative impacts on their clinical work (83%), mental and/or physical health (78%) or personal relationships (59%), and for some (9–12%) these were severe and long lasting. Formal processes such as serious incident inquiries were commonly experienced as distressing. Support was mainly provided by friends, family and colleagues rather than the employing organisation. Clinical implications Mental health service providers need to provide support and guidance to psychiatrists following a patient-perpetrated homicide to help them manage the personal and professional imp...
Journal of Accounting and Finance in Emerging Economies, 2021
Purpose: The current study investigates the new impact of the language style of online reviews (f... more Purpose: The current study investigates the new impact of the language style of online reviews (figurative vs. literal) on customers' perceived credibility and purchase intention the use of figurative language to advertise product quality and social presence has been advocated in previous marketing research. Design/Methodology/Approach: The theory of expectation is adopted that is developed by Victor Vroom, is used in this study. It claims that a person would act or behave in a certain way because they are motivated to choose a specific behavior over others because of the desired output of that activity. A Google Forms quiz was created to collect data from persons who have done online purchasing. They were divided into two groups. The sentiment is echoed by a sample of 334 Pakistani students. The results were assessed using structural equation modeling (SPSS). Findings: The findings show that consumers' purchasing intentions are influenced by both the language style of onlin...
sjesr, 2021
The paper aims at investigating the critical opinions about Bernard Shaw’s ambivalent relation to... more The paper aims at investigating the critical opinions about Bernard Shaw’s ambivalent relation to feminism. In this regard, the researchers highlight the emerging role of postfeminism and its overlapping elements with the Islamic portrayal of womanhood. Shaw differs from his predecessors drastically – he portrays independent female characters as compared to the invisible and submissive females of the past. Thus, one of the striking features of Shaw’s drama is the depiction of liberated women. The Shavian women do not consider men folk as their rivals. There is a shift from powerless to empowered women in academia. The researchers find out that there is an ideological conflict between feminism and Islam but as far as postfeminism is concerned, there is none. Rather, postfeminism propagates and supports the Islamic concept of womanhood thoroughly. It is also worth noting that feminist ideas and ideology have greatly dented the social and political fabric of mankind and human civilizat...
Materials Science in Semiconductor Processing, 2021
Abstract Wide bandgap with low work function-based materials are widely used as an electron trans... more Abstract Wide bandgap with low work function-based materials are widely used as an electron transport layer to achieve high efficiency in silicon heterojunction (SHJ) solar cells. We presented transparent Lithium fluoride (LiFx) films with a wide optical bandgap and various thicknesses for the applications of SHJ solar cells. The high-resolution transmission electron microscopic (HR-TEM) analysis was used to confirm the thickness of LiFx layers. The aluminium electrode's work-function was reduced because of the high dipole moment by the LiFx and lowers an energy barrier at back contact. Enhancement of quantum efficiency (QE) at longer wavelength regions and operating voltage was due to lower energy barrier height can improve the short-circuit current density (Jsc), open-circuit voltage (Voc), and hence solar cell efficiency. Thermally evaporated-based LiFx films showed an optical transmittance of 88 ~ 90% in the visible-NIR (380–1100) nm wavelength region. LiFx/a-Si:H(i)/c-Si/a-Si:H(i)/LiFx structure for 20 nm thick LiFx showed lifetime of 1129.73 μs and implied iVoc of 731.7 mV. SHJ solar cells were fabricated using various thicknesses 1, 10 and 20 nm, respectively. The SHJ solar cells fabricated on 20 nm thick LiFx film yield the maximum efficiency of 17.16% and was used for the baseline condition of simulations. The simulated performance of the SHJ solar cell was improved from 0.098 to 22.58% as a function of variable LiFx work function from 3.2 to 3.9 eV.
sjesr, 2021
This research paper seeks to study the juxtaposition of antithetical forces in the text The Fault... more This research paper seeks to study the juxtaposition of antithetical forces in the text The Fault in Our Stars penned down by John Green. The research centers on the characters' quest for finding an answer to the meaninglessness, attempts for filling the void, facticity, existential angst, and ultimate despair in the framework of the philosophy of 'Existentialism' posited by Jean-Paul Sartre. All the major characters in the novel are cancer patients, living a dismal and distressing life under the looming shadow of death. In an existential vein, the protagonists set out on a journey of self-exploration and choose to eke out a momentary optimism from their pessimistic situations. While battling with the terminal disease, Hazel Grace Lancaster and Augustus Waters engage in an emotional liaison that becomes a redeeming force in their traumatized existence. This research will study how love becomes a life force, an antithetical force juxtaposed with death and devastation. The...
Global Mass Communication Review, 2020
The objective of this research is to investigate the effects of media health campaigns on the peo... more The objective of this research is to investigate the effects of media health campaigns on the people of Punjab province in terms of knowledge, attitude and practice regarding HIV/AIDS. Data was collected through convenient sampling procedure from 500 respondents of age 18 to 57 of 35 different districts of Punjab province. The results confirmed that TV particularly and media, generally is the main source for health information in both urban and rural areas. It is also proved people had more accurate knowledge about HIV/AIDS who got information from media other than who used other sources. To some extent, change in attitude was observed regarding HIV/AIDS. The findings discovered that people had lesser practice ratio other than knowledge and attitude change. Education and income of respondent do not make any difference regarding media health campaigns on their knowledge, on change of attitude and their practices.
Pakistan Social Sciences Review, 2020
This research explores that the political leadership of major political parties relies on candida... more This research explores that the political leadership of major political parties relies on candidate that belonged to dynastic background. Political dynasties became the emerging trend of politics in all political system of the world. Pakistan is one of those countries where more than 50% public representative belongs to some sort of dynasties. An electable candidate is acceptable for nomination and favorable for the voters due to winning position. Contrarily, voters are also motivated and deeply persuaded by dynastic candidate in elections. So the selection of the candidate and the voting trend of the voters both support the dynastic candidate on elections day. The data to predict this argument is collected in two steps. Firstly, from the nomination papers of each candidate to submit the Election Commission of Pakistan and secondly the General Elections 2013 result.
Current Applied Physics, 2019
This is a PDF file of an article that has undergone enhancements after acceptance, such as the ad... more This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.
Journal of Nanoscience and Nanotechnology, 2020
We report the effects of the nitride passivation layer on the structural, electrical, and interfa... more We report the effects of the nitride passivation layer on the structural, electrical, and interfacial properties of Ge metal-oxide-semiconductor (MOS) devices with a hafnium oxide (HfO₂) gate dielectric layer deposited on p-type 〈100〉 Ge substrates. X-ray photoelectron spectroscopy analysis confirmed the chemical states and formation of HfO₂/Ge₃N₄ on Ge. The interfacial quality and thickness of the layers grown on Ge were confirmed by high-resolution transmission electron microscopy. In addition, the effects of post-deposition annealing (PDA) on the HfO₂/Ge₃N₄/Ge and HfO₂/Ge samples at 400 °C in an (FG+O₂) ambient atmosphere for 30 min were studied. After PDA, the HfO₂/Ge₃N₄/Ge MOS device showed a higher dielectric constant (k) of ~21.48 and accumulation capacitance of 1.2 nF, smaller equivalent oxide thickness (EOT) of 1.2 nm, and lower interface trap density (Dit) of 4.9×1011 cm-2 eV-1 and oxide charges (Qeff) of 7.8×1012 cm-2 than the non-annealed sample. The I-V analysis showed that the gate leakage current density of the HfO₂/Ge₃N₄/Ge sample (0.3-1 nA cm-2 at Vg = 1 V) was half of that of the HfO₂/Ge sample. Moreover, the barrier heights of the samples were extracted from the Fowler-Nordheim plots. These results indicated that nitride passivation is crucial to improving the structural, interfacial, and electrical properties of Ge-based MOS devices.
![Research paper thumbnail of Corrigendum to “Electrodeposition of multilayers Ag-Ni-Ag on graphite based paper electrodes” [Ceram. Int. 44 (2018) 23180–23184]](https://attachments.academia-assets.com/103939633/thumbnails/1.jpg)
](Ceramics International, 2019
Journal of Applied Physiology, 1964
Oxygen consumption of human platelets was measured by O2 cathode. Platelets were prepared by coll... more Oxygen consumption of human platelets was measured by O2 cathode. Platelets were prepared by collecting blood into ACD solution, and isolation and washing in buffer by centrifugation. O2 consumption was measured by vibrating cathode at 25 C in Hank's solution. The Qo2 was 14.5 ± 4.8 mμmoles/min 109 platelets with added glucose and 21.4 ± 5.0 with added glycerol. Thrombin addition resulted in increase in Qo2 of elevenfold lasting 3–5 min followed by clumping of the platelets. EDTA blocked the thrombin effect. Similar effects were noted when prothrombin was activated to form thrombin. 5-Hydroxytryptamine was without effect. With EDTA the reaction had two phases, a phase of thrombin effect and a calcium-dependent clumping phase. The observations are compatible with the hypothesis that thrombin alters platelet permeability. platelet clumping; viscous metamorphosis of platelets; platelet respiration measurement by O2 cathode; thrombin effect on platelet respiration; platelet respirat...
Applied Surface Science, 2018
Using the light scattering properties of multi-textured AZO films on inverted hemisphere textured... more Using the light scattering properties of multi-textured AZO films on inverted hemisphere textured glass surface morphologies to improve the efficiency of silicon thin film solar cells,
Transactions on Electrical and Electronic Materials, 2015
Amorphous oxide-based thin-film transistors (TFTs) have drawn a lot of attention recently for the... more Amorphous oxide-based thin-film transistors (TFTs) have drawn a lot of attention recently for the next-generation high-resolution display industry. The required field-effect mobility of oxide-based TFTs has been increasing rapidly to meet the demands of the high-resolution, large panel size and 3D displays in the market. In this regard, the current status and major trends in the high mobility oxide-based TFTs are briefly reviewed. The various approaches, including the use of semiconductor, dielectric, electrode materials and the corresponding device structures for realizing high mobility oxide-based TFT devices are discussed.
Journal of Electronic Materials, 2016
Graphite-based composites are commonly used as an anode and current collector for energy storage ... more Graphite-based composites are commonly used as an anode and current collector for energy storage devices; however, they have inherently limited potential for large scale rechargeable systems due to a brittle structure. In this study, flexible and light-weight graphite-based electrodes are prepared by incorporation of lignocelluloses fibers directly collected from a self-growing plant, Typha Angistifolia. Electrical properties of graphite and lignocelluloses composite sheets are enhanced by electrodeposition of gold in a three-electrode setup. Electrochemical deposition of gold on a lignocelluloses/graphite paper electrode was obtained in potentiostatic mode by the application of reduction potential −0.95 V for 2000 s, 600 s, and 100 s. The gold-deposited paper electrodes showed efficient kinetics by shifting redox peaks towards lower potentials in cyclic voltammetry measurements, whereas impedance measurements revealed seven orders of magnitude reduction in the resistive properties. Incorporated flexibility and superior electrical/electrochemical performance within presented graphite-based composites will provide cutting-edge characteristics for high-tech application of energy storage devices by keeping a focus on modern disposable technology.
Journal of Electronic Materials, 2014
Transparent aluminium-doped ZnO (AZO)-conducting oxide films were deposited on a glass substrate,... more Transparent aluminium-doped ZnO (AZO)-conducting oxide films were deposited on a glass substrate, using an ultrasonic spray pyrolysis (USP) system at 475°C. We investigated the effects of the Al/Zn atomic ratios on the structural properties of the AZO films. All the deposited AZO thin films presented hexagonal wurtzite structure. As Al doping increased in the film, the preferential orientation switched from [002] to [101], and crystallite sizes varied from 31.90 nm to 34.5 nm. Field emission scanning electron microscopy showed a change in the surface morphology of the AZO films with respect to the Al/Zn ratio, and secondary ion mass spectroscopy showed that the amount of Al incorporated into the films was proportional to the concentration of the starting solution. A fast Fourier transform of the AZO film measurements confirmed the presence of (100), (102), and (200) reflections, corresponding to a wurtzite structure of the AZO thin films. The plane corresponding to AZO was simulated, and matched the experimental pattern obtained from high-resolution transmission electron microscopy. An un-doped ZnO layer was deposited onto the AZO film using USP at 400°C, and a bilayer of AZO/ZnO was annealed in vacuum for 20 min at 350°C. The resistivity of these bilayer films was lower than that of a single-layered AZO film, and it further decreased by vacuum annealing.
Transactions on Electrical and Electronic Materials, 2016
The surface morphology of the front transparent conductive oxide (TCO) films plays a vital role i... more The surface morphology of the front transparent conductive oxide (TCO) films plays a vital role in amorphous silicon thin film solar cells (a-Si TFSCs) due to their high transparency, conductivity and excellent light scattering properties. Recently, plasma textured glass surface morphologies received much attention for light trapping in a-Si TFSCs. We report various plasma textured glass surface morphologies for the high efficiency of a-Si TFSCs. Plasma textured glass surface morphologies showed high rms roughness, haze ratio with micro-and nano size surface features and are proposed for future high efficiency of a-Si TFSCs.
Nano-Structures & Nano-Objects
Abstract The cost-effective modernized technology, the sol–gel method was employed to synthesize ... more Abstract The cost-effective modernized technology, the sol–gel method was employed to synthesize SnO2 nanotubes. Different characterization techniques were carried out including X-ray diffraction (XRD), field emission scanning electron microscope (FESEM), energy-dispersive spectroscopy (EDX), X-ray photoelectron spectroscopy (XPS), and cyclic voltammetry (CV) measurements; to analyze the prepared nanotubes as a promising electrode material. The tetragonal phase formation in SnO2 was confirmed from the XRD pattern. FESEM provided the nanotube morphology of the as-synthesized sample. EDX analysis profiled the elemental analysis depicting the presence of constitutional elements i.e. Sn, C, and O in the specimen. The valence states of SnO2 nanotubes were perceived by XPS analysis. Additionally, the ongoing electrode reactions were investigated by CV measurements which revealed the anodic/cathodic peaks. High specific capacitance of about 1291.15 F/g was achieved from CV analysis. The superior electrochemical performance was perceived by all the obtained results which make the SnO2 nanotubes a favorable electrode material for futuristic battery applications.
BJPsych Bulletin
Aims and method To investigate the experiences and support needs of consultant psychiatrists foll... more Aims and method To investigate the experiences and support needs of consultant psychiatrists following a patient-perpetrated homicide, an anonymous online survey was sent to all consultant psychiatrists registered as members of the UK's Royal College of Psychiatrists. Results Of the 497 psychiatrists who responded, 165 (33%) had experienced a homicide by a patient under their consultant care. Most respondents reported negative impacts on their clinical work (83%), mental and/or physical health (78%) or personal relationships (59%), and for some (9–12%) these were severe and long lasting. Formal processes such as serious incident inquiries were commonly experienced as distressing. Support was mainly provided by friends, family and colleagues rather than the employing organisation. Clinical implications Mental health service providers need to provide support and guidance to psychiatrists following a patient-perpetrated homicide to help them manage the personal and professional imp...
Journal of Accounting and Finance in Emerging Economies, 2021
Purpose: The current study investigates the new impact of the language style of online reviews (f... more Purpose: The current study investigates the new impact of the language style of online reviews (figurative vs. literal) on customers' perceived credibility and purchase intention the use of figurative language to advertise product quality and social presence has been advocated in previous marketing research. Design/Methodology/Approach: The theory of expectation is adopted that is developed by Victor Vroom, is used in this study. It claims that a person would act or behave in a certain way because they are motivated to choose a specific behavior over others because of the desired output of that activity. A Google Forms quiz was created to collect data from persons who have done online purchasing. They were divided into two groups. The sentiment is echoed by a sample of 334 Pakistani students. The results were assessed using structural equation modeling (SPSS). Findings: The findings show that consumers' purchasing intentions are influenced by both the language style of onlin...
sjesr, 2021
The paper aims at investigating the critical opinions about Bernard Shaw’s ambivalent relation to... more The paper aims at investigating the critical opinions about Bernard Shaw’s ambivalent relation to feminism. In this regard, the researchers highlight the emerging role of postfeminism and its overlapping elements with the Islamic portrayal of womanhood. Shaw differs from his predecessors drastically – he portrays independent female characters as compared to the invisible and submissive females of the past. Thus, one of the striking features of Shaw’s drama is the depiction of liberated women. The Shavian women do not consider men folk as their rivals. There is a shift from powerless to empowered women in academia. The researchers find out that there is an ideological conflict between feminism and Islam but as far as postfeminism is concerned, there is none. Rather, postfeminism propagates and supports the Islamic concept of womanhood thoroughly. It is also worth noting that feminist ideas and ideology have greatly dented the social and political fabric of mankind and human civilizat...
Materials Science in Semiconductor Processing, 2021
Abstract Wide bandgap with low work function-based materials are widely used as an electron trans... more Abstract Wide bandgap with low work function-based materials are widely used as an electron transport layer to achieve high efficiency in silicon heterojunction (SHJ) solar cells. We presented transparent Lithium fluoride (LiFx) films with a wide optical bandgap and various thicknesses for the applications of SHJ solar cells. The high-resolution transmission electron microscopic (HR-TEM) analysis was used to confirm the thickness of LiFx layers. The aluminium electrode's work-function was reduced because of the high dipole moment by the LiFx and lowers an energy barrier at back contact. Enhancement of quantum efficiency (QE) at longer wavelength regions and operating voltage was due to lower energy barrier height can improve the short-circuit current density (Jsc), open-circuit voltage (Voc), and hence solar cell efficiency. Thermally evaporated-based LiFx films showed an optical transmittance of 88 ~ 90% in the visible-NIR (380–1100) nm wavelength region. LiFx/a-Si:H(i)/c-Si/a-Si:H(i)/LiFx structure for 20 nm thick LiFx showed lifetime of 1129.73 μs and implied iVoc of 731.7 mV. SHJ solar cells were fabricated using various thicknesses 1, 10 and 20 nm, respectively. The SHJ solar cells fabricated on 20 nm thick LiFx film yield the maximum efficiency of 17.16% and was used for the baseline condition of simulations. The simulated performance of the SHJ solar cell was improved from 0.098 to 22.58% as a function of variable LiFx work function from 3.2 to 3.9 eV.
sjesr, 2021
This research paper seeks to study the juxtaposition of antithetical forces in the text The Fault... more This research paper seeks to study the juxtaposition of antithetical forces in the text The Fault in Our Stars penned down by John Green. The research centers on the characters' quest for finding an answer to the meaninglessness, attempts for filling the void, facticity, existential angst, and ultimate despair in the framework of the philosophy of 'Existentialism' posited by Jean-Paul Sartre. All the major characters in the novel are cancer patients, living a dismal and distressing life under the looming shadow of death. In an existential vein, the protagonists set out on a journey of self-exploration and choose to eke out a momentary optimism from their pessimistic situations. While battling with the terminal disease, Hazel Grace Lancaster and Augustus Waters engage in an emotional liaison that becomes a redeeming force in their traumatized existence. This research will study how love becomes a life force, an antithetical force juxtaposed with death and devastation. The...
Global Mass Communication Review, 2020
The objective of this research is to investigate the effects of media health campaigns on the peo... more The objective of this research is to investigate the effects of media health campaigns on the people of Punjab province in terms of knowledge, attitude and practice regarding HIV/AIDS. Data was collected through convenient sampling procedure from 500 respondents of age 18 to 57 of 35 different districts of Punjab province. The results confirmed that TV particularly and media, generally is the main source for health information in both urban and rural areas. It is also proved people had more accurate knowledge about HIV/AIDS who got information from media other than who used other sources. To some extent, change in attitude was observed regarding HIV/AIDS. The findings discovered that people had lesser practice ratio other than knowledge and attitude change. Education and income of respondent do not make any difference regarding media health campaigns on their knowledge, on change of attitude and their practices.
Pakistan Social Sciences Review, 2020
This research explores that the political leadership of major political parties relies on candida... more This research explores that the political leadership of major political parties relies on candidate that belonged to dynastic background. Political dynasties became the emerging trend of politics in all political system of the world. Pakistan is one of those countries where more than 50% public representative belongs to some sort of dynasties. An electable candidate is acceptable for nomination and favorable for the voters due to winning position. Contrarily, voters are also motivated and deeply persuaded by dynastic candidate in elections. So the selection of the candidate and the voting trend of the voters both support the dynastic candidate on elections day. The data to predict this argument is collected in two steps. Firstly, from the nomination papers of each candidate to submit the Election Commission of Pakistan and secondly the General Elections 2013 result.
Current Applied Physics, 2019
This is a PDF file of an article that has undergone enhancements after acceptance, such as the ad... more This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.
Journal of Nanoscience and Nanotechnology, 2020
We report the effects of the nitride passivation layer on the structural, electrical, and interfa... more We report the effects of the nitride passivation layer on the structural, electrical, and interfacial properties of Ge metal-oxide-semiconductor (MOS) devices with a hafnium oxide (HfO₂) gate dielectric layer deposited on p-type 〈100〉 Ge substrates. X-ray photoelectron spectroscopy analysis confirmed the chemical states and formation of HfO₂/Ge₃N₄ on Ge. The interfacial quality and thickness of the layers grown on Ge were confirmed by high-resolution transmission electron microscopy. In addition, the effects of post-deposition annealing (PDA) on the HfO₂/Ge₃N₄/Ge and HfO₂/Ge samples at 400 °C in an (FG+O₂) ambient atmosphere for 30 min were studied. After PDA, the HfO₂/Ge₃N₄/Ge MOS device showed a higher dielectric constant (k) of ~21.48 and accumulation capacitance of 1.2 nF, smaller equivalent oxide thickness (EOT) of 1.2 nm, and lower interface trap density (Dit) of 4.9×1011 cm-2 eV-1 and oxide charges (Qeff) of 7.8×1012 cm-2 than the non-annealed sample. The I-V analysis showed that the gate leakage current density of the HfO₂/Ge₃N₄/Ge sample (0.3-1 nA cm-2 at Vg = 1 V) was half of that of the HfO₂/Ge sample. Moreover, the barrier heights of the samples were extracted from the Fowler-Nordheim plots. These results indicated that nitride passivation is crucial to improving the structural, interfacial, and electrical properties of Ge-based MOS devices.
Ceramics International, 2019
Journal of Applied Physiology, 1964
Oxygen consumption of human platelets was measured by O2 cathode. Platelets were prepared by coll... more Oxygen consumption of human platelets was measured by O2 cathode. Platelets were prepared by collecting blood into ACD solution, and isolation and washing in buffer by centrifugation. O2 consumption was measured by vibrating cathode at 25 C in Hank's solution. The Qo2 was 14.5 ± 4.8 mμmoles/min 109 platelets with added glucose and 21.4 ± 5.0 with added glycerol. Thrombin addition resulted in increase in Qo2 of elevenfold lasting 3–5 min followed by clumping of the platelets. EDTA blocked the thrombin effect. Similar effects were noted when prothrombin was activated to form thrombin. 5-Hydroxytryptamine was without effect. With EDTA the reaction had two phases, a phase of thrombin effect and a calcium-dependent clumping phase. The observations are compatible with the hypothesis that thrombin alters platelet permeability. platelet clumping; viscous metamorphosis of platelets; platelet respiration measurement by O2 cathode; thrombin effect on platelet respiration; platelet respirat...
Applied Surface Science, 2018
Using the light scattering properties of multi-textured AZO films on inverted hemisphere textured... more Using the light scattering properties of multi-textured AZO films on inverted hemisphere textured glass surface morphologies to improve the efficiency of silicon thin film solar cells,
Transactions on Electrical and Electronic Materials, 2015
Amorphous oxide-based thin-film transistors (TFTs) have drawn a lot of attention recently for the... more Amorphous oxide-based thin-film transistors (TFTs) have drawn a lot of attention recently for the next-generation high-resolution display industry. The required field-effect mobility of oxide-based TFTs has been increasing rapidly to meet the demands of the high-resolution, large panel size and 3D displays in the market. In this regard, the current status and major trends in the high mobility oxide-based TFTs are briefly reviewed. The various approaches, including the use of semiconductor, dielectric, electrode materials and the corresponding device structures for realizing high mobility oxide-based TFT devices are discussed.
Journal of Electronic Materials, 2016
Graphite-based composites are commonly used as an anode and current collector for energy storage ... more Graphite-based composites are commonly used as an anode and current collector for energy storage devices; however, they have inherently limited potential for large scale rechargeable systems due to a brittle structure. In this study, flexible and light-weight graphite-based electrodes are prepared by incorporation of lignocelluloses fibers directly collected from a self-growing plant, Typha Angistifolia. Electrical properties of graphite and lignocelluloses composite sheets are enhanced by electrodeposition of gold in a three-electrode setup. Electrochemical deposition of gold on a lignocelluloses/graphite paper electrode was obtained in potentiostatic mode by the application of reduction potential −0.95 V for 2000 s, 600 s, and 100 s. The gold-deposited paper electrodes showed efficient kinetics by shifting redox peaks towards lower potentials in cyclic voltammetry measurements, whereas impedance measurements revealed seven orders of magnitude reduction in the resistive properties. Incorporated flexibility and superior electrical/electrochemical performance within presented graphite-based composites will provide cutting-edge characteristics for high-tech application of energy storage devices by keeping a focus on modern disposable technology.
Journal of Electronic Materials, 2014
Transparent aluminium-doped ZnO (AZO)-conducting oxide films were deposited on a glass substrate,... more Transparent aluminium-doped ZnO (AZO)-conducting oxide films were deposited on a glass substrate, using an ultrasonic spray pyrolysis (USP) system at 475°C. We investigated the effects of the Al/Zn atomic ratios on the structural properties of the AZO films. All the deposited AZO thin films presented hexagonal wurtzite structure. As Al doping increased in the film, the preferential orientation switched from [002] to [101], and crystallite sizes varied from 31.90 nm to 34.5 nm. Field emission scanning electron microscopy showed a change in the surface morphology of the AZO films with respect to the Al/Zn ratio, and secondary ion mass spectroscopy showed that the amount of Al incorporated into the films was proportional to the concentration of the starting solution. A fast Fourier transform of the AZO film measurements confirmed the presence of (100), (102), and (200) reflections, corresponding to a wurtzite structure of the AZO thin films. The plane corresponding to AZO was simulated, and matched the experimental pattern obtained from high-resolution transmission electron microscopy. An un-doped ZnO layer was deposited onto the AZO film using USP at 400°C, and a bilayer of AZO/ZnO was annealed in vacuum for 20 min at 350°C. The resistivity of these bilayer films was lower than that of a single-layered AZO film, and it further decreased by vacuum annealing.