Effects of Gd3+ modifications on the photoelectrochemical properties of TiO2-based dye-sensitized solar cells

被引：5
作者：
Qu, Xiaofei [1 ]
Hou, Yuchen [1 ]
Yang, Junying [1 ]
Liu, Meihua [1 ]
Shi, Liang [1 ]
Du, Fanglin [1 ]
机构：
[1] Qingdao Univ Sci & Technol, Coll Mat Sci & Engn, Zhengzhou Rd 53, Qingdao 266042, Peoples R China
来源：
JOURNAL OF NANOPARTICLE RESEARCH | 2017年 / 19卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Gd3+ modification; TiO2; photoanode; Dyesensitized solar cell; Energy conversion; ENHANCED CONVERSION EFFICIENCY; TIO2; NANOPARTICLES; BLOCKING LAYER; PERFORMANCE; OXIDE; ELECTRODES; PHOTOLUMINESCENCE; PHOTOCATALYST; DEGRADATION; PHOTOANODES;
D O I：
10.1007/s11051-017-3869-8
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
In this paper, TiO2 particles (similar to 30 nm) modified with Gd2O3-coating layer (similar to 2 nm) for dye-sensitized solar cells (DSSCs) were fabricated via the hydrothermal method. Among the solar cells based on the Gd3+-doped TiO2 photoanodes, the optimal conversion efficiency was obtained from the 0.025Gd(3+)-modified TiO2-based cell, with a 17.7% improvement in the efficiency as compared to the unmodified one (7.18%). This enhancement was probably due to the improved UV radiation harvesting via a down-conversion luminescence process by Gd3+ ions, enhancement of visible light absorption and improved dye loading capacity. In addition, after Gd modification, a thin coating could be formed on the TiO2 nanoparticles, whichworked as an energy barrier and resulted in a lower charge recombination.
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页数：10
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