高等学校化学学报Issue(4)：608-613,6.DOI:10.7503/cjcu20141079
抗坏血酸还原亚碲酸钠水相合成CdTe量子点
Aqueous Synthesis of CdTe Quantum Dots via Ascorbic Acid Reducing Sodium Tellurite
摘要
Abstract
Cd-SCH2 COO- complex was formed under basic condition, then the ascorbic acid reacted with Na2 TeO3 to form Te2- ions that combined with Cd-SCH2 COO- complex to give CdTe nucleus. With the CdTe nucleus growing under refluxing, CdTe quantum dots( QDs) with different emission colors were formed at last. The influence of experimental conditions, including refluxing time, thioglycolic acid to cadmium molar ratio and sodium tellurite to cadmium molar ratio, on the luminescent properties of the obtained CdTe QDs were sys-tematically investigated. Furthermore, the obtained QDs were characterized by X-ray powder diffraction ( XRD) and transmission electron microscopy( TEM) . Experimental results showed that the proposed method enables us to obtain zinc-blended CdTe QDs with high photoluminescence quantum yield(up to 27. 1%). The growth time and the relative quantities of reactants impacted the optical properties of QDs.关键词
CdTe量子点/光学性质/发光Key words
CdTe quantum dots/Optical property/Luminescence分类
化学化工引用本文复制引用
谢宪,于梅花,张惠萍,王益林..抗坏血酸还原亚碲酸钠水相合成CdTe量子点[J].高等学校化学学报,2015,(4):608-613,6.基金项目
广西自然科学基金(批准号:2014GXNSFAA118328)、广西教育厅科研基金(批准号:2013YB014)和广西大学“大学生创新创业训练计划”(批准号:2014058)资助.覮Supported by the Guangxi Natural Science Foundation of China(No.2014GXNSFAA118328), the Scientific Research Fund of the Education Department of Guangxi, China(No.22013YB014) and the Foundation of College Students Innovation and Entrepreneurship Training of Guangxi University, China(No.22014058) （批准号:2014GXNSFAA118328）
