Tin Oxide Microspheres with Exposed {101} Facets for Dye-sensitized Solar Cells: Enhanced Photocurrent and Photovoltage

被引：14

作者：

Peng, Wenqin ^{[1
]}

Yang, Xudong ^{[1
]}

Chen, Zhenhua ^{[1
]}

Zhang, Jing ^{[1
]}

Chen, Han ^{[2
]}

Zhang, Kun ^{[1
]}

Han, Liyuan ^{[1
,2
]}

机构：

[1] Natl Inst Mat Sci, Photovolta Mat Unit, Tsukuba, Ibaraki 3050047, Japan

[2] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China

来源：

CHEMSUSCHEM | 2014年 / 7卷 / 01期

基金：

日本科学技术振兴机构;

关键词：

dye-sensitized solar cells; nanoparticles; photochemistry; synthesis design; tin; HIGH-EFFICIENCY; SINGLE-CRYSTALS; CONVERSION EFFICIENCY; HOLLOW MICROSPHERES; LOW-COST; SNO2; PERFORMANCE; NANOCRYSTALS; PHOTOANODES; ELECTRODES;

D O I：

10.1002/cssc.201300644

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Hierarchical SnO2 microspheres with exposed {101} facets are synthesized by a one-pot solvothermal reaction and explored as a scattering layer on top of a SnO2 nanoparticle film for dye-sensitized solar cells (DSCs). The microspheres not only enhance photon harvesting by effective light scattering/reflecting but also improve the energy level of the conduction band edge of the SnO2 photoanode, which leads to a simultaneous increase of the short-circuit photocurrent by 17% and open-circuit photovoltage by 20%. An improved overall conversion efficiency of 3.46% is achieved for DSCs using the SnO2 microspheres, which is the highest value reported so far for pure-SnO2 DSCs. Moreover, the SnO2-microsphere DSCs exhibit a better photostability than the conventional TiO2 DSCs under simulated full sunlight.

引用

页码：172 / 178

页数：7

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