Effect of Different Graphene Oxide Contents on Dye-Sensitized Solar Cells

被引：16
作者：
Chou, Jung-Chuan [1 ]
Huang, Chin-Hui [1 ]
Liao, Yi-Hung [2 ]
Chuang, Shen-Wei [1 ]
Tai, Li-Hong [1 ]
Nien, Yu-Hsun [1 ]
机构：
[1] Natl Yunlin Univ Sci & Technol, Grad Sch Elect Engn, Touliu 64002, Taiwan
[2] TransWorld Univ, Dept Informat Management, Touliu 64063, Taiwan
来源：
IEEE JOURNAL OF PHOTOVOLTAICS | 2015年 / 5卷 / 04期
关键词：
Dye-sensitized solar cell (DSSC); electrochemical impedance spectrometer; graphene; scanning electronic microscopy; X-ray diffractometer; PHOTOVOLTAIC PERFORMANCE; COMPOSITE; FILMS; RECOMBINATION; DIFFUSION; IMPEDANCE; TRANSPORT;
D O I：
10.1109/JPHOTOV.2015.2419137
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Graphene/TiO2 composite films were deposited on fluorine-doped SnO2-coated conductive substrates by spin coating acting as photoelectrodes of dye-sensitized solar cells. The graphene/TiO2 composite films were characterized by scanning electronic microscopy, an X-ray diffractometer, a UV-visible spectrometer, and electrochemical impedance spectroscopy. Nyquist plots showed the decrease of impedance, in which electron transport rate was promoted. The photovoltaic properties showed that the incorporation of graphene could increase the short-circuit current density and photoelectric conversion efficiency. However, an excessive incorporation of graphene led to the enhancement of charge recombination and the reduction of photoelectric conversion efficiency. The graphene/TiO2 composite film with 1.5-mL graphene oxide solution obtained the optimal photoelectric conversion efficiency of 5.26%.
引用
收藏
页码：1106 / 1112
页数：7
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