Ag_2S或CuS掺杂的Zn_(0.5)Cd_(0.5)S纳米晶体:溶剂热法合成及光致发光性能(英文)  

Zn_(0.5)Cd_(0.5)S Nanocrystals Doped with Ag_2S or CuS:Solvothermal Synthesis and Photoluminescence Properties

作　　者：朱金保[1] 畅晓莹[1] 朱国军[1] 袁高清[1] 

机构地区：[1]华南理工大学化学与化工学院,广州510640

出　　处：《无机化学学报》2010年第12期2203-2208,共6页Chinese Journal of Inorganic Chemistry

基　　金：广东省科技计划项目(No.2007B010600041);华南理工大学SRP项目资助

摘　　要：以异丙醇为溶剂,醇热法制备Zn0.5Cd0.5S和Ag2S或CuS掺杂的Zn0.5Cd0.5S纳米晶体,考察了这些纳米晶体在可见光区域的光致发光性能。结果表明,反应温度和反应时间、掺杂剂的浓度和种类对Zn0.5Cd0.5S的发光性能有很大的影响,相比未掺杂Zn0.5Cd0.5S纳米晶体而言,Ag2S或CuS掺杂后其光致发光强度明显增强、半高宽更宽。Zn0.5Cd0.5S nanocrystals and their derivatives doped with Ag2S or CuS were synthesized via a solvothermal process using isopropanol as the solvent.The optical properties of the as-prepared samples were investigated in the visible light region.The results show that the nature and concentration of dopants as well as preparation conditions（reaction temperature and time） have a great influence on the photoluminescence（PL） spectra of Zn0.5Cd0.5S nanocrystals.The Zn0.5Cd0.5S nanocrystals doped with CuS and Ag2S exhibit a stronger PL intensity and wider FWHM（full width at half maximum） in the visible light region compared with the undoped Zn0.5Cd0.5S.

关 键 词：半导体 光致发光 纳米晶体 光学材料 

分 类 号：O611.4[理学—无机化学]