Simple fabrication and improved photoresponse of ZnO-Cu2O core-shell heterojunction nanorod arrays

被引：41

作者：

Wang, Ruey-Chi ^{[1
]}

Lin, Hsin-Ying ^{[1
,2
]}

机构：

[1] Natl Univ Kaohsiung, Dept Chem & Mat Engn, Kaohsiung 81148, Taiwan

[2] Natl Cheng Kung Univ, Inst Nanotechnol & Microsyst Engn, Tainan 70101, Taiwan

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2010年 / 149卷 / 01期

关键词：

Core-shell; Nanorods; Heterojunction; Photoresponse; ZNO;

D O I：

10.1016/j.snb.2010.06.025

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

ZnO-Cu2O core-shell nanorod heterostructures were synthesized by a proposed solution process. High-resolution transmission electron microscopy shows the Cu2O nanoshells with a thickness of around 10nm are constructed of single-crystalline nanoparticles with a diameter of around 5 nm capped on the surface of ZnO nanorods. Photoluminescence measurements show that the green emission of ZnO nanorods was eliminated by capping with Cu2O nanoshells. An improved photoresponse of ZnO-Cu2O heterojunction nanorods with ultrafast and extended high sensitivity from UV to the visible range is demonstrated. These heterostructures are promising for photosensing and solar energy applications. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：94 / 97

页数：4

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