A facile template-free route for synthesis of anatase TiO2 hollow spheres for dye-sensitized solar cells

被引：49

作者：

Lei, Bing-Xin ^{[1
]}

Zhang, Ping ^{[1
]}

Qiao, He-Kang ^{[1
]}

Zheng, Xiao-Feng ^{[1
]}

Hu, Yan-Shan ^{[1
]}

Huang, Guo-Lei ^{[1
]}

Sun, Wei ^{[1
]}

Sun, Zhen-Fan ^{[1
]}

Zhang, Xian-Xi ^{[2
]}

机构：

[1] Hainan Normal Univ, Sch Chem & Chem Engn, Haikou 571158, Peoples R China

[2] Liaocheng Univ, Sch Chem & Chem Engn, Shandong Prov Key Lab Chem Energy Storage & Novel, Liaocheng 252059, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2014年 / 143卷

基金：

中国国家自然科学基金;

关键词：

TiO2; Hollow sphere; Dye-sensitized solar cells; Light-scattering; HIGH-EFFICIENCY; BACK-REACTION; TRANSPORT; IMPEDANCE;

D O I：

10.1016/j.electacta.2014.07.106

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

TiO2 hollow spheres with outer diameter of 1.0-2.5 mu m and shell thickness of 200 nm are successfully prepared via a facile hydrothermal method without use of any template agent. The as-prepared TiO2 hollow spheres are crystalline of the anatase phase, and possess a specific surface area of 48 m(2) g(-1). A high power conversion efficiency of 7.68% is achieved for dye-sensitized solar cell (DSSC) based on TiO2 hollow sphere photoanode, representing a 16% efficiency boost over that of 6.65% achieved with the P25 based DSSC. Based on the optical investigation and electrochemical impedance measurement, the improved performance can be attributed to the enhanced light-scattering and the reduced interface recombination. Crown Copyright (C) 2014 Published by Elsevier Ltd. All rights reserved.

引用

页码：129 / 134

页数：6

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