Dye-sensitized solar cells based on hierarchically structured porous TiO2 filled with nanoparticles

被引：28
|
作者：
Zhao, Zhenxuan [1 ]
Liu, Guicheng [1 ]
Li, Bo [2 ]
Guo, Lixue [1 ]
Fei, Chengbin [1 ]
Wang, Yajie [1 ]
Lv, Lili [2 ]
Liu, Xiaoguang [2 ]
Tian, Jianjun [1 ,2 ]
Cao, Guozhong [1 ,3 ]
机构：
[1] Chinese Acad Sci, Beijing Inst Nanoenergy & Nanosyst, Beijing 100083, Peoples R China
[2] Univ Sci & Technol Beijing, Adv Mat & Technol Inst, Beijing 100083, Peoples R China
[3] Univ Washington, Dept Mat & Engn, Seattle, WA 98195 USA
来源：
JOURNAL OF MATERIALS CHEMISTRY A | 2015年 / 3卷 / 21期
基金：
中国博士后科学基金; 美国国家科学基金会;
关键词：
CHARGE-COLLECTION EFFICIENCIES; ENERGY-CONVERSION; MACROPOROUS TIO2; LIGHT-SCATTERING; RECOMBINATION; FABRICATION; INFILTRATION; ENHANCEMENT; PHOTOANODES; HYSTERESIS;
D O I：
10.1039/c5ta01953b
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：
A new morphology of TiO2 photoanodes for N-719 dye-sensitized solar cells (DSCs) has been developed with enhanced power conversion performance. Strategies for the synthesis of hierarchically structured three-dimensionally ordered macroporous (HS-3DOM) TiO2 with controlled macropore sizes (ca. 85-155 nm) by using well-arrayed polymethyl methacrylate with different diameters as well as two kinds of photoanode films based on hierarchically structured porous TiO2 filled with nanoparticles have been demonstrated. DSCs based on a special TiO2 photoanode with a macropore size of 105 nm exhibited a current density (J(sc)) of 20.6 mA cm(-2) and a high photo-to-electrical energy conversion efficiency (h) of 9.7%. This high power conversion efficiency is ascribed to the special morphology of the TiO2 photoanode with high dye adsorption due to its ordered and open structures, and also its light scattering and charge collection efficiency.
引用
收藏
页码：11320 / 11329
页数：10
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