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微乳状液中CdS超微粒制备与光学特性研究

Preparation of CdS Ultrafine Particles and Study of Their Optical Properties

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【Author】 Li Shoutian/Department of Chemistry, Jilin University, Changchun 130023Zou Bingsuo/Department of Chemistry, Jilin University, Changchun 130023Zhang Yan/Department of Chemistry, Jilin University, Changchun 130023Xiao Liangzhi/Department of Chemistry, Jilin University, Changchun 130023Li Tiejin/Department of Chemistry, Jilin University, Changchun 130023Zhao Jialong/Changchun Institute of Physics, Chinese Academy of Sciences, Changchun 130021Zhang Jisen/Changchun Institute of Physics, Chinese Academy of Sciences, Changchun 130021Huang Shihua/Changchun Institute of Physics, Chinese Academy of Sciences, Changchun 130021Yu Jiaqi/Changchun Institute of Physics, Chinese Academy of Sciences, Changchun 130021

【机构】吉林大学化学系；中国科学院长春物理所；中国科学院长春物理所长春 130023；长春 130023；长春 130022；长春 130022；

【摘要】采用微乳状液法合成了不同粒径的CdS超微粒子,其粒径在纳米范围内。光谱结果表明,CdS有明显的量子尺寸效应。首次发现室温下CdS超微粒的激发与发射光谱的分立峰结构,并且还发现,表面包覆活性剂分子后的CdS超微粒,表面态发光被显著地减弱,空间限域激子态发射增强,这可能有助于提高三阶非线性光学响应。更多还原

【Abstract】 The different sizes in nanometer of CdS ultrafine particles （UFP） are prepared throughmicroemulsion method. Their spectra show that CdS UFP has a prominent quantum size effect.It is for the first time to find the well defined structures in CdS UFP emission and excitationspecma at room temperature. The emission of surface state is significantly reduced in CdSUFP modified by surfactant molecules, but that may enhance X^（3） of CdS UFP.更多还原

【关键词】微乳状液； CdS；超微粒；光学特性；量子尺寸效应；表面态；表面包覆；能级结构；带边；半导体学报；

【基金】国家自然科学基金;中国科学院长春物理所高激态开放实验室项目

【文献出处】半导体学报 ,Chinese Journal of Semiconductors , 编辑部邮箱 ,1993年03期
【被引频次】17
【下载频次】100

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