Nanosheet-assembling Hierarchical Zinc Stannate Microspheres for Enhanced Efficiency of Dye-Sensitized Solar Cells

被引：21

作者：

Li, Zhengdao ^{[1
]}

Zhou, Yong ^{[2
]}

Yang, Hao ^{[1
]}

Huang, Rantao ^{[1
]}

Zou, Zhigang ^{[2
]}

机构：

[1] Nanyang Normal Univ, Chem & Pharmaceut Engn Coll, Nanyang 473061, Henan, Peoples R China

[2] Nanjing Univ, Eco Mat & Renewable Energy Res Ctr ERERC, Jiangsu Key Lab Nanotechnol, Nanjing 210093, Jiangsu, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2015年 / 152卷

关键词：

Zinc Stannate; nanosheet-assembling hierarchical; microspheres; dye-sensitized solar cells; HYDROTHERMAL SYNTHESIS; TIO2; PHOTOANODE; NANOPARTICLES; ELECTRODES; CONVERSION; OXIDES; MICRO;

D O I：

10.1016/j.electacta.2014.11.106

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Nanosheet-assembling hierarchical Zn2SnO4 microspheres (NHMSs) are synthesized via one-pot solvothermal route and used as photoanodes for dye-sensitized solar cells (DSSCs). An overall photoconversion efficiency of 3.43% has been achieved with this ternary metal oxide and structure, significantly higher than that derived from dispersed nanosheets (DNSs) electrode (2.06%). The hierarchical Zn2SnO4 microsphere structure is proven to be favorable for enhancement of overall dyesensitized solar cells photoconversion efficiency via (1) the hierarchical Zn2SnO4 microspheres can function as efficient light scatters to enhance the light-harvesting efficiency; (2) intersectional contact with one another of the nanosheets of densely packed neighboring microspheres offers the transport channel for fast electron transport, avoiding the high resistance existing in the nanoparticle-based microspheres due to the relatively small interface resistance; (3) these spherical assemblies form large external pores for dye loading, at the same time, provide a "main trunk" for the quick electrolyte diffusion throughout the Zn2SnO4 layer in the film. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：25 / 30

页数：6

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