溶剂热合成的Cu掺杂ZnCdS量子点的发光性质研究  

Study of Luminescent Properties of Cu-Doped ZnCdS Quantum Dots Based on Solvothermal Synthesis

作　　者：沈亚云[1] 孙智国 曾若生[1] 

机构地区：[1]贵州师范大学化学与材料科学学院,贵阳550000

出　　处：《化学通报》2015年第12期1166-1169,共4页Chemistry

基　　金：国家自然科学基金项目(21461006和51472053);贵州省国际科技合作计划项目(黔科合外G字[2014]7008号)资助

摘　　要：以低毒、廉价的环己烷为溶剂,通过调控杂质离子和基质材料阳离子的相对反应活性,合成了发光颜色可调、近似球形的Cu∶Zn Cd S量子点。系统研究了油胺的用量、Cu掺杂量、Cd/Zn比以及不同的Zn前驱体对量子点发光性质的影响。通过在Cu∶Zn Cd S量子点晶核外层包覆宽带隙Zn S材料,进一步消除了粒子的表面缺陷,有效提高了量子点的发光效率。Color-tunable and spherical Cu-doped Zn Cd S quantum dots（ QDs） were synthesized by controlling the relative reactivity of the dopant precursors and host cation precursors and using the low toxic and low-cost cyclohexane as the reaction solvent. The effects of various experimental conditions such as the amount of oleylamine,Cu-doping concentration,Cd / Zn ratio and different zinc precursors on the optical properties of QDs were investigated.Furthermore,the emissive efficiency was enhanced by overcoating the Zn S shell material with wide band edge on the Cu∶ Zn Cd S QDs core due to the defects on the surface of QDs were removed.

关 键 词：溶剂热合成 掺杂 量子点 发光性质 

分 类 号：TQ422[化学工程]