Direct evidence on the energy transfer of near-infrared emission in PbS quantum dot-doped glass

被引：14

作者：

Wang, Haipeng ^{[1
]}

Wu, Guobo ^{[1
]}

Qiu, Jianrong ^{[1
]}

Dong, Guoping ^{[1
]}

机构：

[1] S China Univ Technol, Sch Mat Sci & Engn, State Key Lab Luminescent Mat & Device, Guangzhou, Guangdong, Peoples R China

来源：

OPTICS EXPRESS | 2015年 / 23卷 / 13期

基金：

中国国家自然科学基金;

关键词：

OPTICAL-PROPERTIES; MU-M; NANOCRYSTALS; MICROCRYSTALS; CONFINEMENT; GENERATION; LASERS; FILMS; GAIN;

D O I：

10.1364/OE.23.016723

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

PbS quantum dot (QD)-doped glass was prepared by the heat treatment of as-prepared glass, which was confirmed by transmission electron microscope (TEM), absorption and photoluminescence (PL) spectra. Choosing the glass heat treatment at 600 degrees C for 24h as a representative sample, steady-state and transient-state PL, lifetime and time-resolve emission spectra (TRES) of PbS QD-doped glass were studied in detail. The results indicated that the lifetime spectra showed a similar variation tendency with the PL spectra. The steady-state, transient-state PL and TRES results first revealed the energy transfer process from smaller QDs with higher energy to bigger QDs with lower energy in the PbS QD-doped glass. (C) 2015 Optical Society of America

引用

页码：16723 / 16729

页数：7

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