Optical Properties of PbSeandPbSe/CdSeNanocrystals

摘要：

　　Colloidal Ⅳ-Ⅵ semiconductor nanocrystals (NCs) are of importance as potential applications ranging from electroluminescent devices to telecommunication.Notably,PbSenanocrstals provide high emission quantum yields in l~3 μ m spectra range.Size and shape tunable PbSenanocrystals were synthesized via typical non-coordinating solvent technique.”1”Shape and structurecharacterizations of samples were carried out by transmission electron microscope (TEM) and x-ray diffraction (XRD) analysis.A PbSe/CdSe core-shell nanostructure was realized by a cation exchange method for better chemical and optical stability.Blue shift of PbSe peak in photoluminescence spectra was observed as PbSenanocrystals was clad by CdSe shell.These stable nanocrystals can be applied in the fabrication of mid-infrared light-emitting-diodes (LED).

作者: R.F.Li L.Hu C.F.Cai B.P.Zhang S.Q.Jin T.N.Xu H.Z.Wu

作者单位: Department of Physics, Zhejiang University, Hangzhou, Zhejiang 310027

会议类型: 国内会议

会议名称: 第十七届全国化合物半导体材料微波器件和光电器件学术会议

会议地点: 开封

会议语种:英文

页码: 279-279

在线出版日期: 2012-11-07（万方平台首次上网日期，不代表论文的发表时间）