高等学校化学学报2013，Vol.34Issue(1)：45-49,5.DOI:10.7503/cjcu20120227
水合肼还原二氧化碲水相合成CdTe量子点
Aqueous Synthesis of CdTe Quantum Dots from Hydrazine Hydrate and Tellurium Dioxide
摘要
Abstract
A one-step method was developed for the synthesis of thioglycolic acid (TGA) -capped CdTe quantum dots (QDs) in an aqueous medium when tellurium dioxide worked as a tellurium source and hydrazine hydrate acted as a reductant. The influence of experimental conditions, including refluxing time, molar ratio of tellurium to cadmium and molar ratio of TGA to cadmium, on the growth rate and luminescent properties of the obtained CdTe QDs were systematically investigated. Furthermore, the obtained QDs were characterized by fluorescent spectroscopy, powder X-ray diffraction ( XRD) and transmission electron microscopy (TEM ). Experimental results indicated that the growth time and the relative quantities of reactants impacted the growth rate and optical properties of QDs. The proposed method enables us to obtain cubic CdTe QDs with high photo-luminescence quantum yield(up to 26% ) and a broad emission color tunable from green to red.关键词
CdTe量子点/水相合成/发光/水合肼Key words
CdTe quantum dots/ Aqueous synthesis/ Luminescence/ Hydrazine hydrate分类
化学化工引用本文复制引用
王益林,刘声燕,莫凤萍,潘华桥..水合肼还原二氧化碲水相合成CdTe量子点[J].高等学校化学学报,2013,34(1):45-49,5.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）
