Aqueous synthesis of CdSe and CdSe/CdS quantum dots with controllable introduction of Se and S sources

作     者：Xiao Long Rong Qin Zhao Guan Hong Tao 

作者机构：College of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2012年第23卷第8期

页      面：961-964页

核心收录：

学科分类：080903[工学-微电子学与固体电子学] 090403[农学-农药学(可授农学、理学学位）] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 09[农学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0904[农学-植物保护] 

主　　题：CdSe CdSe/CdS Quantum dots Aqueous synthesis Gaseous precursors 

摘      要：A new and convenient route is developed to synthesize CdSe and core-shell CdSe/CdS quantum dots（QDs） in aqueous *** gaseous precursors,H2Se and H2S,generated on-line by reducing SeO 3 2à with NaBH 4 and the reaction between Na 2 S and diluted H2SO 4,are used to form high-quality CdSe and CdSe/CdS QDs,*** synthesized water-soluble CdSe and CdSe/CdS QDs possess high quantum yield（3% and 20%） and narrow full-width-at-half-maximum（43 nm and 38 nm）.The synthesis process is easily reproducible with simple apparatus and low-toxic chemicals,and can be readily extended to the large-scale aqueous synthesis of QDs.