Incorporation of graphene into SnO2 photoanodes for dye-sensitized solar cells

被引：37
作者：
Batmunkh, Munkhbayar [1 ,2 ]
Dadkhah, Mahnaz [2 ]
Shearer, Cameron J. [2 ]
Biggs, Mark J. [1 ,3 ]
Shapter, Joseph G. [2 ]
机构：
[1] Univ Adelaide, Sch Chem Engn, Adelaide, SA 5005, Australia
[2] Flinders Univ S Australia, Sch Chem & Phys Sci, Ctr Nanoscale Sci & Technol, Bedford Pk, Adelaide, SA 5042, Australia
[3] Univ Loughborough, Sch Sci, Loughborough LE11 3TU, Leics, England
来源：
APPLIED SURFACE SCIENCE | 2016年 / 387卷
基金：
澳大利亚研究理事会;
关键词：
Photovoltaic; Dye-sensitized solar cells; Photoanodes; Tin dioxide; Graphene; CARBON NANOTUBE SCAFFOLDS; TIN OXIDE; PERFORMANCE; EFFICIENT; MICROSPHERES; FILMS; NANOSTRUCTURES; TRANSPORT; IMPROVE; BAND;
D O I：
10.1016/j.apsusc.2016.06.146
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：
In dye-sensitized solar cell (DSSC) photoanodes, tin dioxide (SnO2) structures present a promising alternative semiconducting oxide to the conventional titania (TiO2), but they suffer from poor photovoltaic (PV) efficiency caused by insufficient dye adsorption and low energy value of the conduction band. A hybrid structure consisting of SnO2 and reduced graphene oxide (SnO2-RGO) was synthesized via a microwave assisted method and has been employed as a photoanode in DSSCs. Incorporation of RGO into the SnO2 photoanode enhanced the power conversion efficiency of DSSC device by 91.5%, as compared to the device assembled without RGO. This efficiency improvement can be attributed to increased dye loading, enhanced electron transfer and addition of suitable energy levels in the photoanode. Finally, the use of RGO addresses the major shortcoming of SnO2 when employed as a DSSC photoanode, namely poor dye adsorption and slow electron transfer rate. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：690 / 697
页数：8
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