Successive ionic layer adsorption and reaction of ZnSe shells for ZnO nanowire-based dye-sensitized solar cells

被引：15
|
作者：
Chung, Jooyoung [1 ]
Myoung, Jihyun [1 ]
Oh, Jisook [1 ]
Lim, Sangwoo [1 ]
机构：
[1] Yonsei Univ, Dept Chem & Biomol Engn, Seoul 120749, South Korea
来源：
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2012年 / 73卷 / 04期
基金：
新加坡国家研究基金会;
关键词：
Nanostructures; Sol-gel growth; Electron microscopy; Optical properties; NANOPOROUS TIO2; PHOTOVOLTAIC APPLICATIONS; CHARGE RECOMBINATION; OPTICAL-PROPERTIES; GROWTH; ARRAYS; FILMS; CORE; NANORODS;
D O I：
10.1016/j.jpcs.2011.12.001
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Thin ZnSe layers were deposited on ZnO nanowires by a novel successive ionic layer adsorption and reaction technique in order to solve recombination problems in ZnO nanowire-based dye-sensitized solar cells (DSSCs). Cell efficiency increased from 0.1 to 1.3-1.4% with the deposition of a 9- to 13-nm-thick ZnSe shell on ZnO nanowires due to a large increase in J(SC). The dramatic increase in J(SC) and cell efficiency is due to the facilitation of electron transfer related to ambipolar diffusion by the formation of a type II band alignment and the suppression of recombination in the presence of the ZnSe shell. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：535 / 539
页数：5
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