高等学校化学学报2012，Vol.33Issue(7)：1383-1388,6.DOI:10.3969/j.issn.0251-0790.2012.07.004
液体石蜡体系中CdSeS三元量子点的制备及性能
Preparation and Properties of High-quality CdSeS Alloyed Quantum Dots in Liquid Paraffin
摘要
Abstract
A phosphine-free route was successfully developed to prepare highly-quality cadmium selenium sul-fide(CdSeS) alloyed quantum dots(QDs) using paraffin liquid as the reaction solvent and oleic acid as the ligand. The effects of the reaction temperature, growth time, and the molar ratio of S to Se on the properties of the CdSeS QDs were investigated. The as-prepared alloyed CdSeS QDs with zinc-blend crystalline structure possess a broad emission spectral ranging from 370 nm to 595 nm ( from near-ultraviolet to salmon pink ) and high photoluminescence quantum yield (PLQY) up to 65%. Moreover, the as-prepared alloyed CdSeS QDs with a gradient "CdS-rich core/CdSe-rich surface" structure also demonstrate good optical stabilities against the temperature change and photobleaching, which suggests their promising application on photoelectric devices and biological fluorescent labeling.关键词
三元量子点/CdSeS/液体石蜡/热稳定性/光稳定性Key words
Ternary alloyed quantum dots/ CdSeS/ Liquid paraffin/ Thermal stability/ Optical stability分类
化学化工引用本文复制引用
张德龙,李万万,王解兵,孙康..液体石蜡体系中CdSeS三元量子点的制备及性能[J].高等学校化学学报,2012,33(7):1383-1388,6.基金项目
国家自然科学基金(批准号:50902093)和上海市科委国际合作项目(批准号:10520706500)资助. （批准号:50902093）
