MOHD MUBASHSHIR HASAN FAROOQI | SHOBHIT UNIVERSITY, MEERUT (original) (raw)

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Papers by MOHD MUBASHSHIR HASAN FAROOQI

Nucleation and Atmospheric Aerosols, 2013

In this present work the ZnS nanoparticles were synthesized by solid state reaction method at roo... more In this present work the ZnS nanoparticles were synthesized by solid state reaction method at room temperature in agate mortar using zinc acetate dehydrate and sodium sulphide as starting materials. The structural feature was investigated by XRD. The as prepared ZnS nanoparticles have average grain size of 41 nm. Rise and decay curve under UV-vis illumination shows fast rise upon excitation due to generation of charge carriers. The decay shows fast decrease initially due to recombination process followed by a slow decrease due to presence of defects or trap states.

Journal of Alloys and Compounds, 2017

Journal of International Academy Of Physical Sciences, 2012

In the present work, ZnO nanoparticles (NPs) have been prepared by solid state reaction method us... more In the present work, ZnO nanoparticles (NPs) have been prepared by solid state reaction method using zinc acetate dihydrate. The XRD patterns show broadened peaks, which confirm the nanocrystalline nature of ZnO. The crystallite size of as synthesized sample of most intense peak is found to be approximately 16 nm. In the photoconductivity study, voltage dependence of darkcurrent and photocurrent under UV illumination has been investigated. The dependence of darkcurrent (Idc) and photocurrent (Ipc) with applied voltage is found to be super linear (r> 1) at low as well as high voltage. Super linear variation of photo and dark current with voltage may be due to injection of additional charge carriers form electrodes. The rise and decay time transient photoconductivity response measurement help to study the photoconductivity dynamics of ZnO NPs.

Materials Science in Semiconductor Processing, Apr 1, 2014

Proceedings of the National Academy of Sciences, India Section A: Physical Sciences, 2019

In this work, zinc oxide (ZnO) thin films have been deposited on glass substrate using a simple a... more In this work, zinc oxide (ZnO) thin films have been deposited on glass substrate using a simple and inexpensive multi-step sol–gel spin coating method at annealing temperatures of 300, 400, 500 and 600 °C in an open atmosphere. The influence of annealing on structural, photoluminescence and photoconductivity properties of ZnO thin films has been systematically investigated. X-ray diffraction pattern reveals that all ZnO thin films are polycrystalline with hexagonal wurtzite structure. Scanning electron micrograph depicted the formation of ZnO nanofibrous structure. Photoluminescence properties of ZnO thin films have been investigated by photoluminescence spectroscopy at room temperature. Photoconductivity properties have been investigated in terms of several parameters such as voltage dependence of photocurrent and dark current as well as time-resolved rise and decay of photocurrent. The rise and decay spectra under periodic illumination show reproducible and stable photoresponse. The synthesized ZnO thin film seems to be having potential use in UV–Vis photodetectors.

In the present work, ZnO nanoparticles (NPs) have been prepared by solid state reaction method us... more In the present work, ZnO nanoparticles (NPs) have been prepared by solid state reaction method using zinc acetate dihydrate. The XRD patterns show broadened peaks, which confirm the nanocrystalline nature of ZnO. The crystallite size of as synthesized sample of most intense peak is found to be approximately 16 nm. In the photoconductivity study, voltage dependence of darkcurrent and photocurrent under UV illumination has been investigated. The dependence of darkcurrent (Idc) and photocurrent (Ipc) with applied voltage is found to be super linear (r> 1) at low as well as high voltage. Super linear variation of photo and dark current with voltage may be due to injection of additional charge carriers form electrodes. The rise and decay time transient photoconductivity response measurement help to study the photoconductivity dynamics of ZnO NPs.

AIP Conference Proceedings, 2013

In this present work the ZnS nanoparticles were synthesized by solid state reaction method at roo... more In this present work the ZnS nanoparticles were synthesized by solid state reaction method at room temperature in agate mortar using zinc acetate dehydrate and sodium sulphide as starting materials. The structural feature was investigated by XRD. The as prepared ZnS nanoparticles have average grain size of 41 nm. Rise and decay curve under UV-vis illumination shows fast rise upon excitation due to generation of charge carriers. The decay shows fast decrease initially due to recombination process followed by a slow decrease due to presence of defects or trap states.

Materials Science in Semiconductor Processing, 2014

Proceedings of the National Academy of Sciences, India. Section A, Physical sciences, Nov 16, 2019

In this work, zinc oxide (ZnO) thin films have been deposited on glass substrate using a simple a... more In this work, zinc oxide (ZnO) thin films have been deposited on glass substrate using a simple and inexpensive multi-step sol–gel spin coating method at annealing temperatures of 300, 400, 500 and 600 °C in an open atmosphere. The influence of annealing on structural, photoluminescence and photoconductivity properties of ZnO thin films has been systematically investigated. X-ray diffraction pattern reveals that all ZnO thin films are polycrystalline with hexagonal wurtzite structure. Scanning electron micrograph depicted the formation of ZnO nanofibrous structure. Photoluminescence properties of ZnO thin films have been investigated by photoluminescence spectroscopy at room temperature. Photoconductivity properties have been investigated in terms of several parameters such as voltage dependence of photocurrent and dark current as well as time-resolved rise and decay of photocurrent. The rise and decay spectra under periodic illumination show reproducible and stable photoresponse. The synthesized ZnO thin film seems to be having potential use in UV–Vis photodetectors.

Nucleation and Atmospheric Aerosols, 2013

In this present work the ZnS nanoparticles were synthesized by solid state reaction method at roo... more In this present work the ZnS nanoparticles were synthesized by solid state reaction method at room temperature in agate mortar using zinc acetate dehydrate and sodium sulphide as starting materials. The structural feature was investigated by XRD. The as prepared ZnS nanoparticles have average grain size of 41 nm. Rise and decay curve under UV-vis illumination shows fast rise upon excitation due to generation of charge carriers. The decay shows fast decrease initially due to recombination process followed by a slow decrease due to presence of defects or trap states.

Journal of Alloys and Compounds, 2017

Journal of International Academy Of Physical Sciences, 2012

In the present work, ZnO nanoparticles (NPs) have been prepared by solid state reaction method us... more In the present work, ZnO nanoparticles (NPs) have been prepared by solid state reaction method using zinc acetate dihydrate. The XRD patterns show broadened peaks, which confirm the nanocrystalline nature of ZnO. The crystallite size of as synthesized sample of most intense peak is found to be approximately 16 nm. In the photoconductivity study, voltage dependence of darkcurrent and photocurrent under UV illumination has been investigated. The dependence of darkcurrent (Idc) and photocurrent (Ipc) with applied voltage is found to be super linear (r> 1) at low as well as high voltage. Super linear variation of photo and dark current with voltage may be due to injection of additional charge carriers form electrodes. The rise and decay time transient photoconductivity response measurement help to study the photoconductivity dynamics of ZnO NPs.

Materials Science in Semiconductor Processing, Apr 1, 2014

Proceedings of the National Academy of Sciences, India Section A: Physical Sciences, 2019

In this work, zinc oxide (ZnO) thin films have been deposited on glass substrate using a simple a... more In this work, zinc oxide (ZnO) thin films have been deposited on glass substrate using a simple and inexpensive multi-step sol–gel spin coating method at annealing temperatures of 300, 400, 500 and 600 °C in an open atmosphere. The influence of annealing on structural, photoluminescence and photoconductivity properties of ZnO thin films has been systematically investigated. X-ray diffraction pattern reveals that all ZnO thin films are polycrystalline with hexagonal wurtzite structure. Scanning electron micrograph depicted the formation of ZnO nanofibrous structure. Photoluminescence properties of ZnO thin films have been investigated by photoluminescence spectroscopy at room temperature. Photoconductivity properties have been investigated in terms of several parameters such as voltage dependence of photocurrent and dark current as well as time-resolved rise and decay of photocurrent. The rise and decay spectra under periodic illumination show reproducible and stable photoresponse. The synthesized ZnO thin film seems to be having potential use in UV–Vis photodetectors.

In the present work, ZnO nanoparticles (NPs) have been prepared by solid state reaction method us... more In the present work, ZnO nanoparticles (NPs) have been prepared by solid state reaction method using zinc acetate dihydrate. The XRD patterns show broadened peaks, which confirm the nanocrystalline nature of ZnO. The crystallite size of as synthesized sample of most intense peak is found to be approximately 16 nm. In the photoconductivity study, voltage dependence of darkcurrent and photocurrent under UV illumination has been investigated. The dependence of darkcurrent (Idc) and photocurrent (Ipc) with applied voltage is found to be super linear (r> 1) at low as well as high voltage. Super linear variation of photo and dark current with voltage may be due to injection of additional charge carriers form electrodes. The rise and decay time transient photoconductivity response measurement help to study the photoconductivity dynamics of ZnO NPs.

AIP Conference Proceedings, 2013

In this present work the ZnS nanoparticles were synthesized by solid state reaction method at roo... more In this present work the ZnS nanoparticles were synthesized by solid state reaction method at room temperature in agate mortar using zinc acetate dehydrate and sodium sulphide as starting materials. The structural feature was investigated by XRD. The as prepared ZnS nanoparticles have average grain size of 41 nm. Rise and decay curve under UV-vis illumination shows fast rise upon excitation due to generation of charge carriers. The decay shows fast decrease initially due to recombination process followed by a slow decrease due to presence of defects or trap states.

Materials Science in Semiconductor Processing, 2014

Proceedings of the National Academy of Sciences, India. Section A, Physical sciences, Nov 16, 2019

In this work, zinc oxide (ZnO) thin films have been deposited on glass substrate using a simple a... more In this work, zinc oxide (ZnO) thin films have been deposited on glass substrate using a simple and inexpensive multi-step sol–gel spin coating method at annealing temperatures of 300, 400, 500 and 600 °C in an open atmosphere. The influence of annealing on structural, photoluminescence and photoconductivity properties of ZnO thin films has been systematically investigated. X-ray diffraction pattern reveals that all ZnO thin films are polycrystalline with hexagonal wurtzite structure. Scanning electron micrograph depicted the formation of ZnO nanofibrous structure. Photoluminescence properties of ZnO thin films have been investigated by photoluminescence spectroscopy at room temperature. Photoconductivity properties have been investigated in terms of several parameters such as voltage dependence of photocurrent and dark current as well as time-resolved rise and decay of photocurrent. The rise and decay spectra under periodic illumination show reproducible and stable photoresponse. The synthesized ZnO thin film seems to be having potential use in UV–Vis photodetectors.