Reduction of graphene oxide at room temperature with vitamin C for RGO-TiO2 photoanodes in dye-sensitized solar cell

被引：89

作者：

Ding, Hui ^{[1
]}

Zhang, Sam ^{[2
]}

Chen, Ji-Tao ^{[3
]}

Hu, Xiao-Ping ^{[4
]}

Du, Zhao-Fu ^{[1
]}

Qiu, Yue-Xiu ^{[1
]}

Zhao, Dong-Liang ^{[1
]}

机构：

[1] Cent Iron & Steel Res Inst, Res Inst Funct Mat, Beijing 100081, Peoples R China

[2] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore

[3] Peking Univ, Coll Chem & Mol Engn, Beijing 100871, Peoples R China

[4] Adv Technol & Mat Co Ltd, Ctr Res & Dev, Beijing 100081, Peoples R China

来源：

THIN SOLID FILMS | 2015年 / 584卷

基金：

中国国家自然科学基金;

关键词：

Graphene flake; Titanium dioxide; Nanocomposite; Vitamin C; Dye-sensitized solar cells; Photoanodes; CONVERSION EFFICIENCY; ANCHORING SEMICONDUCTOR; METAL NANOPARTICLES; CHEMICAL-REDUCTION; ELECTRON INJECTION; CHARGE-TRANSPORT; TIO2; FILMS; PERFORMANCE; COMPOSITE; MODULATION;

D O I：

10.1016/j.tsf.2015.02.038

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Graphene has been used to enhance conversion efficiency in dye-sensitized solar cell (DSSC) through increased electronic transportation. Introduction of graphene into DSSC is realized through reduction of graphene oxide (GO) to reduced graphene or RGO in TiO2 nanoparticles in solution. Chemical and hydrothermal reactions are two commonly used avenues. In the chemical route, toxic hydrazine and its derivatives are the typical reducing agent. Hydrothermal process is not toxic but requires prolonged heating. In this study, we mix flakes of GO with TiO2 nanoparticles and use vitamin C to realize the reduction at room temperature. The RGO-TiO2 composite films are then used as photoanode in DSSC. A conversion efficiency of 30% increase (to 7.89%) is obtained as compared to that of the pure TiO2 photoanode. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：29 / 36

页数：8

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