Phonon-Assisted Exciton Absorption in CdSe/CdS Colloidal Nanoplatelets

被引：8
|
作者：
Smirnov, A. M. [1 ,2 ]
Golinskaya, A. D. [1 ,3 ]
Saidzhonov, B. M. [4 ]
Vasiliev, R. B. [4 ]
Mantsevich, V. N. [1 ,3 ]
Dneprovskii, V. S. [1 ]
机构：
[1] Moscow MV Lomonosov State Univ, Fac Phys, Dept Semicond Phys & Cryoelect, Moscow 119991, Russia
[2] Russian Acad Sci, Kotelnikov Inst Radio Engn & Elect, Moscow 125009, Russia
[3] Moscow MV Lomonosov State Univ, Fac Phys, Ctr Quantum Technol, Moscow 119991, Russia
[4] Moscow MV Lomonosov State Univ, Fac Mat Sci, Moscow 119991, Russia
来源：
JETP LETTERS | 2019年 / 109卷 / 06期
基金：
俄罗斯科学基金会;
关键词：
INTERBAND CRITICAL-POINTS; TEMPERATURE-DEPENDENCE; OPTICAL-ABSORPTION; SEMICONDUCTOR; EMISSION; GAAS; BAND;
D O I：
10.1134/S0021364019060122
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The features of the nonresonant absorption of CdSe nanoplatelets with a CdS shell are studied in the case of excitation to the exciton absorption edge by high-power nanosecond laser pulses. It is shown that the exciton-phonon interaction plays a key role in the processes of nonresonant absorption of photons in colloidal nanoplatelets. The observed features of the nonlinear change in absorption are explained by the effect of the partial filling of the exciton phase space owing to the interaction with longitudinal optical phonons.
引用
收藏
页码：372 / 376
页数：5
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