胶体化学法合成InP量子点  

Synthesis of InP Quantum Dots by Colloidal Chemical Processing

作　　者：吴启明[1] 张道礼[1] 张建兵[1] 陈胜[1] 

机构地区：[1]华中科技大学电子科学与技术系,湖北武汉430074

出　　处：《纳米科技》2006年第4期36-38,43,共4页

基　　金：教育部重点科技项目（编号：105112）.

摘　　要：采用InCl3·4H2O为铟源，P（Si（CH3）3）3为磷源，TOPO为包覆剂，十二烷胺为表面活性剂，通过胶体化学法合成InP量子点。使用TEM对量子点表面形貌进行了分析，利用荧光光谱仪和紫外可见分光光度计分析了其光学性质。所合成的量子点具有较好的分散性和表面性能，随着粒径的减小，表现出较好的量子效应。量子点表面性能的好坏是影响其光学性能的一个关键因素。The colloidal chemical method is employed to prepare InP quantum dots （QDs）, where InCl3·4H2O, P（Si（CH3）3）3, TOPO and dodecylamine are used respectively as indium source , phosphorus source, capping groups and surfactant. The optical properties and the distribution of the QDs is respectively analyzed by fluorescence spectrometer, UV-VIS absorption spectrometer and TEM. The prepared QDs have a homogeneous dispersion in toluene. With the decreasing of their diameters, obvious quantum effects are detected. Their surface properties are excellent, so are their optical ones. Because the surface property is one of the key factors that effect the optical property of quantum dot.

关 键 词：量子点 纳米晶 胶体化学法 选择性分离 

分 类 号：O471.1[理学—半导体物理]