Luminescent properties of CdSe quantum dots in dispersion media with different polarity

被引：13
|
作者：
Spirin, M. G. [1 ]
Brichkin, S. B. [1 ]
Razumov, V. F. [1 ]
机构：
[1] Russian Acad Sci, Inst Problems Chem Phys, Chernogolovka 142432, Moscow Oblast, Russia
来源：
HIGH ENERGY CHEMISTRY | 2015年 / 49卷 / 06期
基金：
俄罗斯科学基金会;
关键词：
SEMICONDUCTOR NANOCRYSTALS; PHOTOLUMINESCENCE; GROWTH; EFFICIENCY; SPECTRA; GAIN;
D O I：
10.1134/S0018143915060144
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：
It has been found that the luminescence quantum yield of CdSe colloidal quantum dots (QD) synthesized in the presence of n-octadecylphosphonic acid and trioctylphosphine oxide significantly depends on the polarity of the medium in which they are dispersed and increases with decreasing the polarity of the medium. Different methods of increasing the quantum yield have been studied; the conditions have been found under which its value reaches 0.9, which is comparable to record values currently known for core@shell QD and is maximum for QD without an additional semiconductor shell. The effect of precipitating solvents on the luminescence efficiency of QD has been studied.
引用
收藏
页码：426 / 432
页数：7
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