高等学校化学学报2011，Vol.32Issue(12)：2727-2732,6.
颜色可调的高荧光CdTe量子点的水相合成
Synthesis of Highly Emissive, Color-tunable CdTe Quantum Dots in Aqueous Solution
摘要
Abstract
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 re-ductant. 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 ( Cd2+ ) : n( Te2- ) : n(MSA)= 1:0.05:1.4.关键词
碲化镉/量子点/荧光Key words
Cadmium telluride/ Quantum dot/ Photoluminescence分类
化学化工引用本文复制引用
王益林,黄武,王荣芳,周立亚..颜色可调的高荧光CdTe量子点的水相合成[J].高等学校化学学报,2011,32(12):2727-2732,6.基金项目
国家自然科学基金(批准号:61066006)和广西大学科研基金(批准号:XBZ110359)资助. （批准号:61066006）
