Aqueous synthesis of color-tunable and stable Mn2+-doped ZnSe quantum dots

被引：56
|
作者：
Shao, Pengtao [2 ]
Zhang, Qinghong [2 ]
Li, Yaogang [1 ]
Wang, Hongzhi [2 ]
机构：
[1] Donghua Univ, Engn Res Ctr Adv Glasses Mfg Technol, Minist Educ, Shanghai 201620, Peoples R China
[2] Donghua Univ, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China
来源：
JOURNAL OF MATERIALS CHEMISTRY | 2011年 / 21卷 / 01期
基金：
中国国家自然科学基金;
关键词：
SEMICONDUCTOR NANOCRYSTALS; MICROFLUIDIC REACTOR; CORE/SHELL NANOCRYSTALS; CDTE NANOCRYSTALS; NANOPARTICLES; EMITTERS; CELLS;
D O I：
10.1039/c0jm01878c
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The aqueous synthesis of color-tunable and stable Mn2+-doped ZnSe quantum dots (Mn:ZnSe d-dots) via a nucleation-doping strategy was realized in a three-necked flask and the photoluminescence (PL) peak position was easily tuned from 572 nm to 602 nm by prolonging the epitaxial-growthg time. The chemical stability of the resulting d-dots is much better than that of CdTe via an aqueous synthesis. Separation of nucleation and growth of crystallization, and multiple-step-injection of both zinc precursor and 3-mercaptopropionic acid (MPA) stabilizing reagent, were employed to realize a balanced, mutually diffused interface and a pure ZnSe shell. The resulting nanocrystals show excellent optical properties, implying that nanocrystals with high quality could also be achieved via aqueous synthesis.
引用
收藏
页码：151 / 156
页数：6
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