Graphene-based counter electrode for dye-sensitized solar cells

被引：383
|
作者：
Zhang, D. W. [1 ,2 ]
Li, X. D. [1 ]
Li, H. B. [1 ]
Chen, S. [1 ]
Sun, Z. [1 ]
Yin, X. J. [2 ]
Huang, S. M. [1 ]
机构：
[1] E China Normal Univ, Engn Res Ctr Nanophoton & Adv Instrument, Minist Educ, Dept Phys, Shanghai 200062, Peoples R China
[2] Singapore Polytech, Ctr Adv Mat Technol, Singapore 139651, Singapore
来源：
CARBON | 2011年 / 49卷 / 15期
基金：
中国国家自然科学基金;
关键词：
CARBON NANOTUBES; LOW-COST; PERFORMANCE; FABRICATION; CIRCUIT; FILMS; GAS; ION;
D O I：
10.1016/j.carbon.2011.08.005
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：
Graphene nanosheets (GNs) were synthesized and used as a substitute for platinum as counter-electrode materials for dye-sensitized solar cells (DSSCs). The as-synthesized GNs were dispersed in a mixture of terpineol and ethyl cellulose. GN films were screen-printed on fluorine-doped tin oxide (PTO) slides using the formed GN dispersions. GN counter-electrodes were produced by annealing the GN films at different temperatures. The annealed GN films revealed an unusual 3D network structure. Structural and electrochemical properties of the formed GN counter-electrodes were examined by field emission scanning electron microscopy, Raman spectroscopy and electrochemical impedance spectroscopy. It was found that the annealing temperature of GN materials played an important role in the quality of the GN counter-electrode and the photovoltaic performance of the resultant DSSC. The grown DSSCs with graphene-based counter-electrodes exhibited a conversion efficiency high up to 6.81%. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：5382 / 5388
页数：7
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