PREPARATION OF COATED CdS/ZnS NANOPARTICLE IN MICROEMULSION AND THEIR OPTICAL PROPERTIES

Yang Yi; Shen Dezhen; Yu Guangyou; Zhang Jiying; Yang Baojun; Fan Xiwu

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PREPARATION OF COATED CdS/ZnS NANOPARTICLE IN MICROEMULSION AND THEIR OPTICAL PROPERTIES

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- PREPARATION OF COATED CdS/ZnS NANOPARTICLE IN MICROEMULSION AND THEIR OPTICAL PROPERTIES
- Chinese Journal of Luminescence Vol. 20, Issue 3, Pages: 251-253(1999)
- 作者机构：
  
  1. 中国科学院长春物理研究所, 吉林长春130021
  2. 中国科学院激发态物理开放实验室,吉林长春,130021
- 作者简介：
- 基金信息：
- DOI：
  CLC： O912
- Received：31 May 1998，
  
  Published：30 August 1999
- 稿件说明：
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羊亿, 申德振, 于广友, 张吉英, 杨宝均, 范希武. CdS/ZnS包覆结构纳米微粒的微乳液合成及光学特性[J]. 发光学报, 1999,20(3): 251-253

YANG Yi, SHEN Dezhen, YU Guangyou, ZHANG Jiying, YANG Baojun, FAN Xiwu. PREPARATION OF COATED CdS/ZnS NANOPARTICLE IN MICROEMULSION AND THEIR OPTICAL PROPERTIES[J]. Chinese Journal of Luminescence, 1999,20(3): 251-253
羊亿, 申德振, 于广友, 张吉英, 杨宝均, 范希武. CdS/ZnS包覆结构纳米微粒的微乳液合成及光学特性[J]. 发光学报, 1999,20(3): 251-253 DOI：

YANG Yi, SHEN Dezhen, YU Guangyou, ZHANG Jiying, YANG Baojun, FAN Xiwu. PREPARATION OF COATED CdS/ZnS NANOPARTICLE IN MICROEMULSION AND THEIR OPTICAL PROPERTIES[J]. Chinese Journal of Luminescence, 1999,20(3): 251-253 DOI：

摘要

利用微乳液法合成CdS纳米微粒

并对其进行表面修饰

得到具有CdS/ZnS包覆结构的纳米微粒

以吸收光谱与透射电镜表征其粒度与包覆结构

得到CdS内核的直径为5nm

CdS/ZnS包覆结构总粒径为8～10nm

吸收阈值及发射峰的蓝移起因于量子限域效应.并观测到ZnS的包覆可减弱CdS纳米微粒的表面态发射、增强带边发射、并使带边发射进一步蓝移.

Abstract

It is reported in this paper that CdS nanopatricle was synthesized in microemulsion

and the surface of CdS nanoparticle was decorated by depositing a layer of ZnS

then formed CdS/ZnS coated structrue nanoparticle.The size and the coated structure was characterized by absorption-spectra and TEM.The diameter of CdS core is 5nm.The total diameter of CdS/ZnS coated structure is 8～10nm.The blue shift of λ

threshold

and PL peak is caused by quantum size effect.The coating of ZnS can reduce the emission of surface traps of CdS nanoparticle and enhance the emission of band edge and lead it blue shift more.

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