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

页码：535 / 539

页数：5

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