Partha Pratim Sahu - Academia.edu (original) (raw)

Papers by Partha Pratim Sahu

In this paper, we have demonstrated two mode interference (TMI) coupler using the material SiO2/S... more In this paper, we have demonstrated two mode interference (TMI) coupler using the material SiO2/SiON having index contrast (Deltan) of 2% and 5% and the corresponding compact beat lengths are observed as ~103 mum and ~50 mum, respectively. The reduction of the beat length with Deltan and the corresponding width of the coupling zone are analyzed and compared with the experimental results. We also analyzed the coupling coefficients for the TMI couplers and the directional couplers (DC) and observed that the coupling coefficient of a DC with small gap (les 0.02 mum) is same to that of a TMI coupler. We have demonstrated a DC with small gap (<1 mum) and Deltan of 2% and the corresponding beat length is ~207 mum. The wavelength multiplexing/demultiplexing using the TMI couplers is also discussed

Journal of optics, Sep 1, 2003

Thennal analysis ofthemlOoptic device IIsing planar optical wllvegllide structures is perjonned b... more Thennal analysis ofthemlOoptic device IIsing planar optical wllvegllide structures is perjonned by using implicit finite difference method. lsothenllal profiles of the medium having the core and cladding are shown from the computation results. We have proposed two new structures where lower heatil/g power is required whel/ compared to that of the conventiol/a/ structure. A compromise between heating power and response time is made for different applica/iollS of themlOoptic devices.

Indian Chemical Engineer, Dec 16, 2021

Biosensors in Food Safety and Quality, 2022

Journal of Lightwave Technology, 2016

In this paper, an optical controlled surface plasmonic two mode interference (SPTMI) structure ba... more In this paper, an optical controlled surface plasmonic two mode interference (SPTMI) structure based on silicon waveguide has been proposed for all optical switching. We have shown cross and bar state switching characteristics depending on additional phase between the excited SPP modes propagating through the silicon core obtained due to refractive index modulation of GaAsInP cladding with incidence of optical pulse of width ∼1 ps. It is also seen that the coupling length of the proposed device is ∼33 times compact than that of the existing multimode interference-directional coupler. The deviation of crosstalk of the SPTMI switch with increase of fabrication tolerances (±δw) is also almost to that of previously reported all optical switch.

Lecture Notes in Computer Science, 2019

In this paper, a MIS based patch electrode multilayered capacitive sensor has been modelled mathe... more In this paper, a MIS based patch electrode multilayered capacitive sensor has been modelled mathematically. The sensor consists of ZnO sensing layer having patch top electrode, SiO 2 layer and silicon substrate with bottom electrode. The overall capacitance of electrode is formulated by considering central, corner and fringe capacitances. The simulation was performed using mathematical mode to design the sensing layer thickness, patch electrode height and area and oxide layer thickness.

Biosensors in Food Safety and Quality, 2022

Superlattices and Microstructures, 2017

Research highlight:  A hydrothermal growth technique is introduced to synthesize hexagonal high ... more Research highlight:  A hydrothermal growth technique is introduced to synthesize hexagonal high sensitive zinc oxide (ZnO) with large surface area to volume ratio. The defect states are also optimized for get better sensing performance.  Different properties for sensing material sample and uniform ZnO nanorod are characterized through Photoluminescence (PL), XRD, XPS, I-V.

Optik, 2016

Abstract In this paper, we reported improvement in crystalline quality by changing structural pro... more Abstract In this paper, we reported improvement in crystalline quality by changing structural properties of ZnO thin film into hexagonal shaped nanorods. ZnO thin films were deposited on Si (1 0 0) substrate using dielectric sputter. As-grown film (Sample A) was subjected to chemical etching for forming hexagonal nanorods. The overall electrical & optical performances like photo luminescence performance, X-ray diffraction performance in terms of crystal formation & reflectance performance are improver after rapid thermal & chemical treatments.

Optical and Quantum Electronics, 2015

Overall series resistance of the contact increases due to unwanted pores created during the time ... more Overall series resistance of the contact increases due to unwanted pores created during the time of contact formation in solar cell. Light induced plating is an industrial established process which is used to reduce the series resistance and to improve the contact resistance resulting in increase of fill factor of solar cell through modification of front side contact. In this paper a theoretical modeling is done to show how distributed pores affect the series resistance and solar cell performance. Here we explored several parameters like: series resistance, shunt resistance, fill factor, short circuit current, and external quantum efficiency. Through our experimental setup it is found that the short circuit current improves significantly and also it is observed that during the time of experiment due to unintentional deposition of silver nanoparticles, external quantum efficiency improved by 5.249 % and a reduction of reflectance by 2.03 %. An overall enhancement of solar cell efficiency of 1.65 % is obtained during the process.

Thin Solid Films, 2019

The bulk heterojunction (BHJ) grown with nanopillar has been predicted to be high performance sol... more The bulk heterojunction (BHJ) grown with nanopillar has been predicted to be high performance solar cell due to having high photon and electron collection capability. Here, we report a reproducible high efficient Si-ZnO-ZnMgO BHJ solar cell having nanopillar structure (efficiency > 20.9%). Due to its tendency to formation of single crystal orientation (002) in its structure and reduced contact and series resistance, long term stability is guaranteed as the device maintains its initial efficiency for 2400 h at 75% stability/reliability.

Applied Optics, 2011

A double S-bend structure has been proposed for the reduction of coupling length of the 2 × 2 two... more A double S-bend structure has been proposed for the reduction of coupling length of the 2 × 2 two mode interference (TMI) coupler. The coupling characteristics of the proposed structure are compared with those of conventional TMI structures using a simple mathematical model based on sinusoidal modes. The longitudinal beat length for the proposed TMI coupler is reduced by 15% of the beat length of a conventional TMI coupler. The effect of power imbalance on fabrication tolerance of the proposed TMI coupler is also studied and compared with other TMI couplers.

Journal of Packaging Technology and Research, 2021

In the present investigation, a paper-based pH indicator was developed using anthocyanin from pur... more In the present investigation, a paper-based pH indicator was developed using anthocyanin from purple rice bran for rapid food quality monitoring. The efficiency of the indicator was studied in different buffer solutions of pH range 2–10. The indicator was made with 150 mg/L anthocyanin concentration shows a distinct L , a , and b values of color. Furthermore, the indicator was tested in different liquid foods with varying pH and indicating distinct color in every pH value. The degradation behavior of a value (redness) of the indicator was investigated in 4 and 25 °C. The degradation behavior at 4 and 25 °C was best fitted with first-order kinetics ( R 2 = 0.99 and 0.97) than zero-order ( R 2 = 0.98 and 0.96). In addition, the performance of the indicator was compared with the previous research observations. The present study manifested a green route of monitoring for liquid food quality using low-cost and highly sensitive pH indicator.

Lecture Notes in Electrical Engineering, 2020

IEEE Transactions on Electron Devices, 2021

Main issues of large-scale and large-area production of the solar cell are the high cost of fabri... more Main issues of large-scale and large-area production of the solar cell are the high cost of fabrication due to the involvement of costly and sophisticated equipment and the use of costly materials in fabrication. Here, an effective and low-cost approach has been proposed for the fabrication of reduced graphene oxide (rGO)–ZnO/silicon heterostructure solar cells. The hybrid composite of rGO–ZnO has been synthesized by using a low-cost chemical method and deposited on a pcSi substrate by a sol-gel process for application in heterojunction solar cells. The morphology, crystal phase, surface functional groups, and optoelectronic properties of the heterostructure have been investigated by using SEM, XRD, the Fourier transform infrared (FTIR) spectroscopy, the Raman spectroscopy, and the UV-vis spectroscopy. The <inline-formula> <tex-math notation="LaTeX">${I}$ </tex-math></inline-formula>–<inline-formula> <tex-math notation="LaTeX">${V}$ </tex-math></inline-formula> characteristics of the fabricated heterojunction cell show a power conversion efficiency of 4.35% (<inline-formula> <tex-math notation="LaTeX">$V_{\text {oc}}= {0.51}$ </tex-math></inline-formula> V, <inline-formula> <tex-math notation="LaTeX">${J}_{\text {sc}}= {14.47}$ </tex-math></inline-formula> mA<inline-formula> <tex-math notation="LaTeX">$\cdot $ </tex-math></inline-formula>cm⁻², and fill factor (FF) = 51.60) due to having enhanced conductivity/charge transfer efficiency by the hybrid semiconductor. This simple approach assures the low-cost mass production of heterojunction solar cells.

IEEE Transactions on Electron Devices, 2021

This article presents a low-cost fabrication of binary/coupled ZnO–SnO₂ co... more This article presents a low-cost fabrication of binary/coupled ZnO–SnO₂ composite semiconductors for heterojunction solar cells using a simple and effective sol-gel approach. Here, the synthesis and characterization of coupled ZnO–SnO₂ nanocomposites are carried out with varied stoichiometry designated as ZnO–SnO₂(20:80), ZnO–SnO₂(50:50), and ZnO–SnO₂(80:20). The X-ray diffraction (XRD) spectra confirmed an excellent crystalline domain in the order of ZnO–SnO₂(80:20) > ZnO–SnO₂(50:50) > ZnO–SnO₂(20:80). Nanorods formation of ZnO–SnO₂ has been confirmed through the scanning electron microscopy (SEM) micrograph. The improvement in photoconversion efficiency of solar cell from 3.39% to 3.98% was achieved due to increasing photo-excited free carrier generation with a significant change of nanorods dimensions. Furthermore, the UV–vis spectroscopy exhibited impressive transmittance of 85% in the wavelength range of 200–1000 nm. A bandgap modulation of 3.66–3.40 eV has been achieved. The power conversion efficiency (PCE) of 3.98 (<inline-formula> <tex-math notation="LaTeX">${J}_{\text {sc}} = {18.83}$ </tex-math></inline-formula> mA/cm², <inline-formula> <tex-math notation="LaTeX">${V}_{\text {oc}} = {0.581}$ </tex-math></inline-formula> V, and FF = 36.37) is determined using ZnO–SnO₂(80:20), which is almost twice of that of a single semiconductor-based Al/ZnO/p-Si/Al solar cell.

Materials Today: Proceedings, 2020

Artificial photosynthesis based on solar guided water splitting is essential to obtain green rene... more Artificial photosynthesis based on solar guided water splitting is essential to obtain green renewable energy sources which is a potential replacement of fossil fuels. This paper presents a water splitting design with proper choice of non-precious and easily available composite metal (Fe, Ni, Mn and Al) based electrode to evolve the cleanest form of H 2 and O 2 separately through water electrolysis with a low voltage of 1.6 V using NaOH electrolyte of pH 12.7. The power supply embedded with solar panel connecting to the electrodes (anode/cathode) is maintained at a voltage level of 1.5-5 V in order to initiate the electrolysis process (electrolyte NaOH, pH = 12.7). This process leads to movement of H + and OH À ions to cathode and anode kept within the gas chambers and the H 2 gas evolved is stored. Experimental results show a high rate of H 2 evolution that falls in the range of (7.3 Â 10 15 to 37.3x 10 15) molecules s À1 and current density is found to be 2.6 mA cm À2 at 1.6 Volt which is far better than that of many state-ofthe-art techniques. The proposed design setup along with the composite materials based electrode, produces a high rate of Hydrogen gas from H 2 O with high current density in low voltage.

IEEE Sensors Journal, 2018

The bulk heterostructure having nanopillar growth on top surface of the proposed photodetector st... more The bulk heterostructure having nanopillar growth on top surface of the proposed photodetector structure is a promising candidate of high detection for high resolution quantum optic and high speed optical communication. Here we report Si-ZnO-ZnMgO having grown with aligned hexagonal nanopillars for high performance photo detector, due to having its high quantum efficiency. From the proposed structure (electro-optically modified) high responsivity of 2.857 x 10 2 AW-1 and detectivity of 1.33 x 10 15 cm Hz 1/2 W-1 (3mm x 3mm) was achieved and also the small performance degradation with increase of temperature shows thermal stability.

Materials Science in Semiconductor Processing, 2019

Reduced graphene oxide (rGO) has been focused on different application such as photovoltaic, ener... more Reduced graphene oxide (rGO) has been focused on different application such as photovoltaic, energy storage and clinical instrumentation due to its unique chemical, electrical and optical properties. Proper synthesis of rGO is required to achieve these properties. Here, a green approach using alcoholic mediums has been introduced to reduce the oxygen content in rGO for enhancement of electrical properties. The rGO samples prepared using ethanol, methanol, 2-propanol and acetone as reducing agents were analyzed by various characterization. The reduction of oxygen functional groups using ethanol medium promises a synthesis of rGO with enhanced electrical conductivity due to the presence of more graphene domain. The ethanol reduced graphene oxide provides band gap of 3.13 eV and room temperature conductivity of 1.19 S/m showing the semiconducting property for application of electronics device.

In this paper, we have demonstrated two mode interference (TMI) coupler using the material SiO2/S... more In this paper, we have demonstrated two mode interference (TMI) coupler using the material SiO2/SiON having index contrast (Deltan) of 2% and 5% and the corresponding compact beat lengths are observed as ~103 mum and ~50 mum, respectively. The reduction of the beat length with Deltan and the corresponding width of the coupling zone are analyzed and compared with the experimental results. We also analyzed the coupling coefficients for the TMI couplers and the directional couplers (DC) and observed that the coupling coefficient of a DC with small gap (les 0.02 mum) is same to that of a TMI coupler. We have demonstrated a DC with small gap (<1 mum) and Deltan of 2% and the corresponding beat length is ~207 mum. The wavelength multiplexing/demultiplexing using the TMI couplers is also discussed

Journal of optics, Sep 1, 2003

Thennal analysis ofthemlOoptic device IIsing planar optical wllvegllide structures is perjonned b... more Thennal analysis ofthemlOoptic device IIsing planar optical wllvegllide structures is perjonned by using implicit finite difference method. lsothenllal profiles of the medium having the core and cladding are shown from the computation results. We have proposed two new structures where lower heatil/g power is required whel/ compared to that of the conventiol/a/ structure. A compromise between heating power and response time is made for different applica/iollS of themlOoptic devices.

Indian Chemical Engineer, Dec 16, 2021

Biosensors in Food Safety and Quality, 2022

Journal of Lightwave Technology, 2016

In this paper, an optical controlled surface plasmonic two mode interference (SPTMI) structure ba... more In this paper, an optical controlled surface plasmonic two mode interference (SPTMI) structure based on silicon waveguide has been proposed for all optical switching. We have shown cross and bar state switching characteristics depending on additional phase between the excited SPP modes propagating through the silicon core obtained due to refractive index modulation of GaAsInP cladding with incidence of optical pulse of width ∼1 ps. It is also seen that the coupling length of the proposed device is ∼33 times compact than that of the existing multimode interference-directional coupler. The deviation of crosstalk of the SPTMI switch with increase of fabrication tolerances (±δw) is also almost to that of previously reported all optical switch.

Lecture Notes in Computer Science, 2019

In this paper, a MIS based patch electrode multilayered capacitive sensor has been modelled mathe... more In this paper, a MIS based patch electrode multilayered capacitive sensor has been modelled mathematically. The sensor consists of ZnO sensing layer having patch top electrode, SiO 2 layer and silicon substrate with bottom electrode. The overall capacitance of electrode is formulated by considering central, corner and fringe capacitances. The simulation was performed using mathematical mode to design the sensing layer thickness, patch electrode height and area and oxide layer thickness.

Biosensors in Food Safety and Quality, 2022

Superlattices and Microstructures, 2017

Research highlight:  A hydrothermal growth technique is introduced to synthesize hexagonal high ... more Research highlight:  A hydrothermal growth technique is introduced to synthesize hexagonal high sensitive zinc oxide (ZnO) with large surface area to volume ratio. The defect states are also optimized for get better sensing performance.  Different properties for sensing material sample and uniform ZnO nanorod are characterized through Photoluminescence (PL), XRD, XPS, I-V.

Optik, 2016

Abstract In this paper, we reported improvement in crystalline quality by changing structural pro... more Abstract In this paper, we reported improvement in crystalline quality by changing structural properties of ZnO thin film into hexagonal shaped nanorods. ZnO thin films were deposited on Si (1 0 0) substrate using dielectric sputter. As-grown film (Sample A) was subjected to chemical etching for forming hexagonal nanorods. The overall electrical & optical performances like photo luminescence performance, X-ray diffraction performance in terms of crystal formation & reflectance performance are improver after rapid thermal & chemical treatments.

Optical and Quantum Electronics, 2015

Overall series resistance of the contact increases due to unwanted pores created during the time ... more Overall series resistance of the contact increases due to unwanted pores created during the time of contact formation in solar cell. Light induced plating is an industrial established process which is used to reduce the series resistance and to improve the contact resistance resulting in increase of fill factor of solar cell through modification of front side contact. In this paper a theoretical modeling is done to show how distributed pores affect the series resistance and solar cell performance. Here we explored several parameters like: series resistance, shunt resistance, fill factor, short circuit current, and external quantum efficiency. Through our experimental setup it is found that the short circuit current improves significantly and also it is observed that during the time of experiment due to unintentional deposition of silver nanoparticles, external quantum efficiency improved by 5.249 % and a reduction of reflectance by 2.03 %. An overall enhancement of solar cell efficiency of 1.65 % is obtained during the process.

Thin Solid Films, 2019

The bulk heterojunction (BHJ) grown with nanopillar has been predicted to be high performance sol... more The bulk heterojunction (BHJ) grown with nanopillar has been predicted to be high performance solar cell due to having high photon and electron collection capability. Here, we report a reproducible high efficient Si-ZnO-ZnMgO BHJ solar cell having nanopillar structure (efficiency > 20.9%). Due to its tendency to formation of single crystal orientation (002) in its structure and reduced contact and series resistance, long term stability is guaranteed as the device maintains its initial efficiency for 2400 h at 75% stability/reliability.

Applied Optics, 2011

A double S-bend structure has been proposed for the reduction of coupling length of the 2 × 2 two... more A double S-bend structure has been proposed for the reduction of coupling length of the 2 × 2 two mode interference (TMI) coupler. The coupling characteristics of the proposed structure are compared with those of conventional TMI structures using a simple mathematical model based on sinusoidal modes. The longitudinal beat length for the proposed TMI coupler is reduced by 15% of the beat length of a conventional TMI coupler. The effect of power imbalance on fabrication tolerance of the proposed TMI coupler is also studied and compared with other TMI couplers.

Journal of Packaging Technology and Research, 2021

In the present investigation, a paper-based pH indicator was developed using anthocyanin from pur... more In the present investigation, a paper-based pH indicator was developed using anthocyanin from purple rice bran for rapid food quality monitoring. The efficiency of the indicator was studied in different buffer solutions of pH range 2–10. The indicator was made with 150 mg/L anthocyanin concentration shows a distinct L , a , and b values of color. Furthermore, the indicator was tested in different liquid foods with varying pH and indicating distinct color in every pH value. The degradation behavior of a value (redness) of the indicator was investigated in 4 and 25 °C. The degradation behavior at 4 and 25 °C was best fitted with first-order kinetics ( R 2 = 0.99 and 0.97) than zero-order ( R 2 = 0.98 and 0.96). In addition, the performance of the indicator was compared with the previous research observations. The present study manifested a green route of monitoring for liquid food quality using low-cost and highly sensitive pH indicator.

Lecture Notes in Electrical Engineering, 2020

IEEE Transactions on Electron Devices, 2021

Main issues of large-scale and large-area production of the solar cell are the high cost of fabri... more Main issues of large-scale and large-area production of the solar cell are the high cost of fabrication due to the involvement of costly and sophisticated equipment and the use of costly materials in fabrication. Here, an effective and low-cost approach has been proposed for the fabrication of reduced graphene oxide (rGO)–ZnO/silicon heterostructure solar cells. The hybrid composite of rGO–ZnO has been synthesized by using a low-cost chemical method and deposited on a pcSi substrate by a sol-gel process for application in heterojunction solar cells. The morphology, crystal phase, surface functional groups, and optoelectronic properties of the heterostructure have been investigated by using SEM, XRD, the Fourier transform infrared (FTIR) spectroscopy, the Raman spectroscopy, and the UV-vis spectroscopy. The <inline-formula> <tex-math notation="LaTeX">${I}$ </tex-math></inline-formula>–<inline-formula> <tex-math notation="LaTeX">${V}$ </tex-math></inline-formula> characteristics of the fabricated heterojunction cell show a power conversion efficiency of 4.35% (<inline-formula> <tex-math notation="LaTeX">$V_{\text {oc}}= {0.51}$ </tex-math></inline-formula> V, <inline-formula> <tex-math notation="LaTeX">${J}_{\text {sc}}= {14.47}$ </tex-math></inline-formula> mA<inline-formula> <tex-math notation="LaTeX">$\cdot $ </tex-math></inline-formula>cm⁻², and fill factor (FF) = 51.60) due to having enhanced conductivity/charge transfer efficiency by the hybrid semiconductor. This simple approach assures the low-cost mass production of heterojunction solar cells.

IEEE Transactions on Electron Devices, 2021

This article presents a low-cost fabrication of binary/coupled ZnO–SnO₂ co... more This article presents a low-cost fabrication of binary/coupled ZnO–SnO₂ composite semiconductors for heterojunction solar cells using a simple and effective sol-gel approach. Here, the synthesis and characterization of coupled ZnO–SnO₂ nanocomposites are carried out with varied stoichiometry designated as ZnO–SnO₂(20:80), ZnO–SnO₂(50:50), and ZnO–SnO₂(80:20). The X-ray diffraction (XRD) spectra confirmed an excellent crystalline domain in the order of ZnO–SnO₂(80:20) > ZnO–SnO₂(50:50) > ZnO–SnO₂(20:80). Nanorods formation of ZnO–SnO₂ has been confirmed through the scanning electron microscopy (SEM) micrograph. The improvement in photoconversion efficiency of solar cell from 3.39% to 3.98% was achieved due to increasing photo-excited free carrier generation with a significant change of nanorods dimensions. Furthermore, the UV–vis spectroscopy exhibited impressive transmittance of 85% in the wavelength range of 200–1000 nm. A bandgap modulation of 3.66–3.40 eV has been achieved. The power conversion efficiency (PCE) of 3.98 (<inline-formula> <tex-math notation="LaTeX">${J}_{\text {sc}} = {18.83}$ </tex-math></inline-formula> mA/cm², <inline-formula> <tex-math notation="LaTeX">${V}_{\text {oc}} = {0.581}$ </tex-math></inline-formula> V, and FF = 36.37) is determined using ZnO–SnO₂(80:20), which is almost twice of that of a single semiconductor-based Al/ZnO/p-Si/Al solar cell.

Materials Today: Proceedings, 2020

Artificial photosynthesis based on solar guided water splitting is essential to obtain green rene... more Artificial photosynthesis based on solar guided water splitting is essential to obtain green renewable energy sources which is a potential replacement of fossil fuels. This paper presents a water splitting design with proper choice of non-precious and easily available composite metal (Fe, Ni, Mn and Al) based electrode to evolve the cleanest form of H 2 and O 2 separately through water electrolysis with a low voltage of 1.6 V using NaOH electrolyte of pH 12.7. The power supply embedded with solar panel connecting to the electrodes (anode/cathode) is maintained at a voltage level of 1.5-5 V in order to initiate the electrolysis process (electrolyte NaOH, pH = 12.7). This process leads to movement of H + and OH À ions to cathode and anode kept within the gas chambers and the H 2 gas evolved is stored. Experimental results show a high rate of H 2 evolution that falls in the range of (7.3 Â 10 15 to 37.3x 10 15) molecules s À1 and current density is found to be 2.6 mA cm À2 at 1.6 Volt which is far better than that of many state-ofthe-art techniques. The proposed design setup along with the composite materials based electrode, produces a high rate of Hydrogen gas from H 2 O with high current density in low voltage.

IEEE Sensors Journal, 2018

The bulk heterostructure having nanopillar growth on top surface of the proposed photodetector st... more The bulk heterostructure having nanopillar growth on top surface of the proposed photodetector structure is a promising candidate of high detection for high resolution quantum optic and high speed optical communication. Here we report Si-ZnO-ZnMgO having grown with aligned hexagonal nanopillars for high performance photo detector, due to having its high quantum efficiency. From the proposed structure (electro-optically modified) high responsivity of 2.857 x 10 2 AW-1 and detectivity of 1.33 x 10 15 cm Hz 1/2 W-1 (3mm x 3mm) was achieved and also the small performance degradation with increase of temperature shows thermal stability.

Materials Science in Semiconductor Processing, 2019

Reduced graphene oxide (rGO) has been focused on different application such as photovoltaic, ener... more Reduced graphene oxide (rGO) has been focused on different application such as photovoltaic, energy storage and clinical instrumentation due to its unique chemical, electrical and optical properties. Proper synthesis of rGO is required to achieve these properties. Here, a green approach using alcoholic mediums has been introduced to reduce the oxygen content in rGO for enhancement of electrical properties. The rGO samples prepared using ethanol, methanol, 2-propanol and acetone as reducing agents were analyzed by various characterization. The reduction of oxygen functional groups using ethanol medium promises a synthesis of rGO with enhanced electrical conductivity due to the presence of more graphene domain. The ethanol reduced graphene oxide provides band gap of 3.13 eV and room temperature conductivity of 1.19 S/m showing the semiconducting property for application of electronics device.