UV-reduction of graphene oxide and its application as an interfacial layer to reduce the back-transport reactions in dye-sensitized solar cells

被引：211

作者：

Kim, Sung Ryong ^{[1
]}

Parvez, Md. Khaled ^{[1
]}

Chhowalla, Manish ^{[2
,3
]}

机构：

[1] Chungju Natl Univ, Dept Polymer Sci & Engn, Chungju 380702, South Korea

[2] Rutgers State Univ, Dept Mat Sci & Engn, Piscataway, NJ 08854 USA

[3] Univ London Imperial Coll Sci Technol & Med, Dept Mat, London SW7 2AZ, England

来源：

CHEMICAL PHYSICS LETTERS | 2009年 / 483卷 / 1-3期

基金：

英国工程与自然科学研究理事会;

关键词：

LOW-COST; TRANSPARENT; FILMS; CARBON;

D O I：

10.1016/j.cplett.2009.10.066

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A mixture of graphene oxide (GO) and TiO2 nanocomposites was reduced photocatalytically by UV-irradiation and applied as interfacial layer between a fluorine doped tin oxide (FTO) layer and a nanocrystalline TiO2 film. Impedance spectra implied a decreased back-transport reaction of electrons. The graphene-TiO2 interfacial layer effectively reduced the contact between I-3(-) ions in the electrolyte and FTO layer, which inhibited back-transport reaction. The introduction of graphene-TiO2 increased V-oc by 54 mV and the photoconversion efficiency was improved from 4.89% to 5.26%. (C) 2009 Published by Elsevier B.V.

引用

页码：124 / 127

页数：4

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