Investigation on Exciton Relaxation Kinetics of ZnCuInS/ZnSe/ZnS Quantum Dots by Time-Resolved Spectroscopy Techniques

被引：1
作者：
Li, Xue-cong [1 ]
Sui, Ning [2 ]
Zhang, Yu [3 ]
机构：
[1] Tianjin Polytech Univ, Dept Phys, Tianjin 300387, Peoples R China
[2] Jilin Univ, Coll Phys, Changchun 130012, Peoples R China
[3] Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect, Changchun 130012, Peoples R China
来源：
CHINESE JOURNAL OF CHEMICAL PHYSICS | 2015年 / 28卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Quantum dots; Time-resolved spectroscopy; Exciton relaxation kinetics; SEMICONDUCTOR NANOCRYSTALS; LIGHT; NANOPARTICLES; LUMINESCENT; DYNAMICS;
D O I：
10.1063/1674-0068/28/cjcp1409143
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
The exciton relaxation kinetics of ZnCuInS/ZnSe/ZnS quantum dots (QDs) is investigated by time-resolved spectroscopy techniques in detail. Based on the rate distribution model, the wavelength-dependent emission dynamics shows that the intrinsic exciton, the exciton in the interface defect state and that in donor-acceptor pair state (DAPS) together participate in the photoluminescence process of QDs, and the whole emission process is mainly dependent on the DAPS emission. Transient absorption data show that the intrinsic exciton and the interface defect species maybe together appear after excitation and the intensity-dependent Auger recombination process also exists in QDs at high excitation intensity.
引用
收藏
页码：54 / 58
页数：5
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