高等学校化学学报

高等学校化学学报 ›› 2005, Vol. 26 ›› Issue (1): 155.

• 研究简报 • 上一篇    下一篇

一种提高SiO2凝胶玻璃中ZnSe纳米晶稳定性的方法

孔凡滔, 汪敏强, 王云鹏, 姚熹, 姜海青   

  1. 西安交通大学电子陶瓷与器件教育部重点实验室, 西安 710049
  • 收稿日期:2003-12-23 出版日期:2005-01-10 发布日期:2005-01-10
  • 通讯作者: 汪敏强(1960年出生),男,博士,副教授,主要从事半导体纳米晶光电功能材料的研究.E-mail:mqwang@mail.xjtu.edu.cn E-mail:mqwang@mail.xjtu.edu.cn
  • 基金资助:

    国家重大基础研究发展计划(批准号:2002CB613305);中国-以色列国际合作项目资助

Enhancement of the Stability of ZnSe Nanocrystals Doped in Silica by a New Method

KONG Fan-Tao, WANG Min-Qiang, WANG Yun-Peng, YAO Xi, JIANG Hai-Qing   

  1. Key Laboratory of Electronic Ceramic Materials and Device of Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, China
  • Received:2003-12-23 Online:2005-01-10 Published:2005-01-10

PDF (PC)

关键词: ZnSe, 纳米晶, 稳定性, Zn空位

Abstract: ZnSe nanocrystals doped in silica were prepared by using sol-gel process and in situ growth technique. It was found that when n(Zn):n(Se)=1:1 in the sol precursor, the resultant ZnSe nanocrystals were rather instable and after several days the color of the ZnSe nanocrystals-doped SiO2 glass changed from yellow to red. According to the analysis results of XRD, UV-Vis transmission spectra and XPS, the existence of many zinc vacancies in the ZnSe nanocrystals was considered as the reason of the instability. Based on this reason, the synthesis process was improved by introducing much larger amount of zinc to the precursor sol and this made the stability of the ZnSe nanocrystals improved greatly from several days to more than 6 months.

Key words: ZnSe, Nanocrystals, Stability, Zn vacancies

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