Improved dye-sensitized solar cell with a ZnO nanotree photoanode by hydrothermal method

被引：14
|
作者：
Kuo, Shou-Yi [1 ]
Yang, Jui-Fu [1 ,2 ]
Lai, Fang-I [2 ,3 ]
机构：
[1] Chang Gung Univ, Dept Elect Engn, Tao Yuan 333, Taiwan
[2] Yuan Ze Univ, Dept Photon Engn, Chungli 32003, Taiwan
[3] Natl Cheng Kung Univ, Adv Optoelect Technol Ctr, Tainan 701, Taiwan
来源：
NANOSCALE RESEARCH LETTERS | 2014年 / 9卷
关键词：
Zinc oxide; Dye-sensitized solar cell; Nanorods; Tree-like; NANOWIRES; RECOMBINATION; PERFORMANCE; CONVERSION; NANOSHEETS; TRANSPORT;
D O I：
10.1186/1556-276X-9-206
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
This study investigated the influence of ZnO nanostructures on dye adsorption to increase the photovoltaic conversion efficiency of solar cells. ZnO nanostructures were grown in both tree-like and nanorod (NR) arrays on an AZO/FTO film structure by using a hydrothermal method. The results were observed in detail using X-ray diffraction, field-emission scanning electron microscopy (FE-SEM), UV-visible spectrophotometry, electrochemical impedance spectroscopy, and solar simulation. The selective growth of tree-like ZnO was found to exhibit higher dye adsorption loading and conversion efficiency than ZnO NRs. The multiple 'branches' of 'tree-like nanostructures' increases the surface area for higher light harvesting and dye loading while reducing charge recombination. These improvements result in a 15% enhancement in power conversion. The objective of this study is to facilitate the development of a ZnO-based dye-sensitized solar cell.
引用
收藏
页码：1 / 6
页数：6
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