Control of Photocurrent Generation in Polymer/ZnO Nanorod Solar Cells by Using a Solution-Processed TiO2 Overlayer

被引:62
作者
Atienzar, Pedro [1 ]
Ishwara, Thilini [1 ]
Illy, Benoit N. [3 ]
Ryan, Mary P. [3 ]
O'Regan, Brian C. [2 ]
Durrant, James R. [2 ]
Nelson, Jenny [1 ]
机构
[1] Univ London Imperial Coll Sci Technol & Med, Dept Phys, London SW7 2AZ, England
[2] Univ London Imperial Coll Sci Technol & Med, Dept Chem, London SW7 2AZ, England
[3] Univ London Imperial Coll Sci Technol & Med, Dept Mat, London SW7 2AZ, England
来源
JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2010年 / 1卷 / 04期
基金
英国工程与自然科学研究理事会;
关键词
PHOTOVOLTAIC DEVICES; FILMS;
D O I
10.1021/jz900356u
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We report herein the fabrication of hybrid conjugated polymer/ZnO photovoltaic devices using ZnO nanorod structures prepared by electrodeposition and study the effect of introducing a second metal oxide overlayer using a TiCl4 post-treatment. We use transient absorption spectroscopy, scanning electron microscopy, and photovoltaic device measurements to study the microstructure and charge generation properties of the hybrid films and the performance of the resulting devices. We show how the ZnO nanostructure can be controlled via the nanorod growth conditions and demonstrate that photovoltaic device performance can be optimized by controlling the nanostructure in this way. Moreover, we show that a large increase in photocurrent generation can be achieved by coating the ZnO surface with a thin layer of titanium oxide by treating the ZnO nanostructure with a TiCl4 solution.
引用
收藏
页码:708 / 713
页数:6
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