ZnO/CuO 核壳结构纳米线光致发光性能

与CuO壳层厚度的关系

孟秀清; 赵东旭; 吴锋民; 方允樟; 李京波

doi:10.3788/fgxb20123303.0280

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ZnO/CuO 核壳结构纳米线光致发光性能与CuO壳层厚度的关系

材料合成及性能研究 | 更新时间：2020-08-12

- ZnO/CuO 核壳结构纳米线光致发光性能与CuO壳层厚度的关系
- Relationship Between Photoluminescence Properties of ZnO/CuO Core/Shell Nanowires and The Thickness of CuO Shells
- 发光学报 2012年33卷第3期页码：280-285
- 作者机构：
  
  1. 浙江师范大学 LED芯片研发中心,浙江金华,321004
  2. 发光学与应用国家重点实验室中国科学院长春光学精密机械与物理研究所,吉林长春,130033
- 作者简介：
- 基金信息：
  
  国家自然科学基金(11104250)资助项目()
- DOI：10.3788/fgxb20123303.0280
  中图分类号： O469
- 收稿日期：2012-01-20，
  
  修回日期：2012-02-14，
  
  网络出版日期：2012-03-10，
  
  纸质出版日期：2012-03-10
- 稿件说明：
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孟秀清, 赵东旭, 吴锋民, 方允樟, 李京波. ZnO/CuO 核壳结构纳米线光致发光性能,,与CuO壳层厚度的关系[J]. 发光学报, 2012,33(3): 280-285

MENG Xiu-qing, ZHAO Dong-xu, WU Feng-min, FANG Yun-zhang, LI Jing-bo. Relationship Between Photoluminescence Properties of ZnO/CuO Core/Shell Nanowires and The Thickness of CuO Shells[J]. Chinese Journal of Luminescence, 2012,33(3): 280-285
孟秀清, 赵东旭, 吴锋民, 方允樟, 李京波. ZnO/CuO 核壳结构纳米线光致发光性能,,与CuO壳层厚度的关系[J]. 发光学报, 2012,33(3): 280-285 DOI： 10.3788/fgxb20123303.0280.

MENG Xiu-qing, ZHAO Dong-xu, WU Feng-min, FANG Yun-zhang, LI Jing-bo. Relationship Between Photoluminescence Properties of ZnO/CuO Core/Shell Nanowires and The Thickness of CuO Shells[J]. Chinese Journal of Luminescence, 2012,33(3): 280-285 DOI： 10.3788/fgxb20123303.0280.

摘要

通过分别生长核层与壳层制备出了ZnO/CuO核壳结构的纳米线。形貌和结构分析表明

ZnO核为单晶纳米线而CuO则以多晶形式覆盖在核层表面上。光致发光(PL)研究表明

ZnO纳米线PL强度随CuO壳层厚度的变化而变化。当壳层比较薄时ZnO的PL强度增大

这主要是由于CuO壳层对ZnO核层的修饰减少了表面态

而当壳层厚度增加到一定程度时

ZnO的PL强度不再变化

这主要是由于在核壳结构中形成了type-I型结构的原因。我们对这一现象做了详细的讨论。

Abstract

ZnO/CuO one-dimensional core/shell nanowires have been synthesized by sequential growth of core and shell

respectively. Phase and structural analyses reveal that the ZnO core has single crystalline phase whereas the CuO shell has polycrystalline phase covering on the surface of the core. The photoluminescence (PL) properties of ZnO nanowires change with the CuO shell thickness. The photoluminescence intensity increases when the shell is very thin

which is attributed to the surface modification by CuO shell. When the shell gets thicker

the intensity of the photoluminescence does not change any more because a type-I band alignment is formed between the core and shell. The experimental result is discussed.

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references

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