Coherent and incoherent carrier dynamics of InGaAs quantum dots analyzed by transient photoluminescence

被引：2
|
作者：
Nishimura, T
Lan, S
Akahane, K
Kawabe, M
Wada, O
机构：
[1] Mitsubishi Elect Corp, Adv Technol R&D Ctr, Amagasaki, Hyogo 6618661, Japan
[2] Univ Tsukuba, Inst Appl Phys, Tsukuba, Ibaraki 3058537, Japan
[3] FESTA, FESTA Labs, Tsukuba, Ibaraki 3002635, Japan
来源：
JOURNAL OF LUMINESCENCE | 2000年 / 87-9卷
关键词：
carrier dynamics; highly packed quantum dots; tunneling; coherent coupling;
D O I：
10.1016/S0022-2313(99)00221-5
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Two-dimensional InGaAs quantum dot superlattice is expected to offer coherent exciton formation enabling rapid carrier recombination. As the exciton coherent length is elongated by lowering the excitation power density, a transition of coupling among quantum dots from incoherent to coherent was confirmed. The photoluminescence decay time exhibited significant reduction at higher energy of emission indicating very fast carrier transfer at the bottom of miniband energy. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：494 / 496
页数：3
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