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Title of Journal: J Solid State Electrochem

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Abbravation: Journal of Solid State Electrochemistry

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Springer Berlin Heidelberg

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DOI

10.1007/bf01929823

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ISSN

1433-0768

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Effect of TiOSubscript2/Subscript/reduced grap

Authors: Ramamoorthy Raja Maheswari Govindaraj Maggie Dayana Antony Karthika Krishnan Eswaramoorthi Velusamy Anandan Sambandam Manoharan Subbaiah Victor Williams Rayar
Publish Date: 2016/10/22
Volume: 21, Issue: 3, Pages: 891-903
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Abstract

The objective of the present work was to study the change in efficiency of dyesensitized solar cells due to introduction of a thin blocking composite layer of TiO2 and graphene The reduced graphene oxide prepared by chemically exfoliation method was confirmed as few layer graphene through Xray diffraction Raman analysis and atomic force microscopy technique Xray photoelectron spectroscopy was used to study the oxygen functionalities in graphene oxide and in reduced graphene oxide Graphenedoped TiO2 thin films were coated by solgel routed spin coating technique and characterized by ultravioletvisible photoluminescence analysis Fourier transform infrared spectroscopy Xray diffraction studies field emission scanning electron microscopy and transmission electron microscopy The effect of blocking layer on the efficiency of dyesensitized solar cells was studied using the photocurrentvoltage characteristics and electrochemical impedance spectroscopy The studies indicated that the titaniagraphene composite thin film worked as both blocking layer and ohmic contact between porous TiO2 and fluorinedoped tin oxide glass improved the overall device performance by reducing the interfacial resistance which in turn depends on the doping concentration of graphene in TiO2 The device with blocking layer improved the photoconversion efficiency from 249 to 509 

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  15. Development of nano IrO 2 composite-reinforced nickel–phosphorous electrodes for hydrogen evolution reaction
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