中文摘要：

以亚碲酸钠为碲源,硼氢化钠为还原剂,一步合成了巯基丁二酸（MSA）稳定的CdTe量子点.研究了反应液pH值、镉与碲的摩尔比及镉与巯基丁二酸的摩尔比等实验条件对CdTe量子点体系荧光量子产率的影响,并用荧光光谱、X射线粉末衍射及透射电子显微镜等对其进行了表征.结果表明,CdTe量子点具有闪锌矿结构,形貌呈球状;在pH=10.5,n（Cd^2＋）∶n（Te^2-）∶n（MSA）=1∶0.05∶1.4的条件下,制备的各种发光颜色的量子点都具有较高的荧光量子产率,最高值可达73.3%.

英文摘要：

A novel technology was developed for the synthesis of mercaptosuccinic acid（MSA）-capped CdTe quantum dots（QDs） when sodium tellurite worked as a tellurium source and sodium borohydride acted as a reductant.The influences of various experimental variables,including pH value,Cd/Te and Cd/MSA molar ratios,on the photoluminescence（PL） quantum yield（QY） of the prepared CdTe QDs were systematically investigated.The obtained QDs were characterized by photoluminescence spectroscopy,X-ray powder diffraction（XRD） and transmission electron microscopy（TEM）.The results show that the CdTe QDs are of zinc-blended crystal structure in a sphere-like shape;various luminescent CdTe QDs with high emission efficiency（maximum quantum yield of 73.3%） can be prepared at pH=10.5 and n（Cd^2＋）∶ n（Te^2-）∶ n（MSA）=1∶ 0.05∶ 1.4.