期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 121, 期 15, 页码 8645-8652出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpcc.7b01952
关键词
-
资金
- Ministry of Education and Science of the Russian Federation [16.8981.2017/BCh, 14.B25.31.0002]
- Ministry of Education of the Russian Federation (scholarship of President of the Russian Federation for young scientists and graduate students) [CPi-1841.2015.1]
The optical properties of lead sulfide quantum dots (QDs) of different sizes embedded in a nanoporous silicate glass matrix (NSM) are investigated by steady-state and transient photoluminescence spectroscopy. The use of this matrix allows the fabrication of samples with reproducible optical characteristics, for both isolated and close-packed QDs. Low-temperature PL analysis of isolated QDs with sizes of 3.7 and 4.5 nm shows that the,Coefficient of temperature shift of the PL position changes sign with reducing QD size because of, Size-dependent contributions from thermal expansion, mechanical strain, and electron-phonon coupling. The PL intensity is determined by size-dependent splitting of the lowest energy electronic state.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据