The procedure to realize two-dimensional quantum dot superlattices: From incoherently coupled to coherently coupled quantum dot arrays

被引：7

作者：

Lan, S ^{[1
]}

Akahane, K ^{[1
]}

Jang, KY ^{[1
]}

Kawamura, T ^{[1
]}

Okada, Y ^{[1
]}

Kawabe, M ^{[1
]}

机构：

[1] Univ Tsukuba, Inst Mat Sci, Tsukuba, Ibaraki 3058573, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS | 1999年 / 38卷 / 2B期

关键词：

self-organized growth; quantum dot superlattices; coherent and incoherent; coupling; photoluminescence;

D O I：

10.1143/JJAP.38.1090

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We will describe, from both the theoretical and experimental points of view, a procedure leading to the realization of two-dimensional quantum dot superlattices (2D QDSLs). Two kinds of laterally coupled quantum dot arrays in which the exciton motions are coherent and incoherent: are studied by photoluminescence (PL) measurements. The formation of minibands with coherent exciton motion is demonstrated in the large red shift of the PL peak energy as well as the dramatic narrowing of the PL linewidth. Moreover, we indicate, using excitation-dependent PL spectra as an example, that the exciton coherence can be reduced by various scattering mechanisms.

引用

页码：1090 / 1093

页数：4

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