One-step synthesis of hierarchical SnO2/TiO2 composite hollow microspheres as an efficient scattering layer for dye-sensitized solar cells

被引：30

作者：

Xie, Fengyan ^{[1
,2
]}

Wang, Jingjing ^{[1
,2
]}

Li, Yafeng ^{[1
,2
]}

Dou, Jie ^{[1
,2
]}

Wei, Mingdeng ^{[1
,2
]}

机构：

[1] Fuzhou Univ, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Fujian, Peoples R China

[2] Fuzhou Univ, Inst Adv Energy Mat, Fuzhou 350002, Fujian, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2019年 / 296卷

基金：

中国国家自然科学基金;

关键词：

SnO2/TiO2; microspheres; Dye-sensitized solar cells; Light scattering layer; Photovoltaic performance; HIGHLY-EFFICIENT; SURFACE-AREA; TIO2; BEADS; CONVERSION; PERFORMANCE; SPHERES; SIZE; FILM;

D O I：

10.1016/j.electacta.2018.10.194

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Hierarchical SnO2/TiO2 composite hollow microspheres were synthesized via one-step hydrothermal route by using titanium tetrabutoxide as titanium source and potassium stannate and tripolycyanamide as co-additive, and the samples were characterized by XRD, BET, SEM and TEM measurements. The results denoted that the synthesized microspheres with a diameter of ca 500-1000 nm were assembled by thin nanosheets and possessed a large surface area of 199.3 m(2) g(-1). In addition, EDX and element mapping measurements indicated that a small amount of SnO2 nanoparticles uniformly distributed among the nanosheets of microspheres. The hierarchical microspheres simultaneously facilitated dye adsorption, light harvesting, and electron transport, giving rise to a high photovoltaic conversion efficiency of 8.70% when applied as scattering layer for dye-sensitized solar cells, which was a 28.1% improvement compared to that of bare nanocrystalline TiO2 (6.79%, Dyesol) based cell. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：142 / 148

页数：7

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