Enhanced infrared absorption of spatially ordered quantum dot arrays

被引：3

作者：

Ma, W. Q. ^{[1
]}

Sun, Y. W. ^{[1
]}

Yang, X. J. ^{[1
]}

Chong, M. ^{[1
]}

Jiang, D. S. ^{[1
]}

Chen, L. H. ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Semicond, Lab Nanooptoelect, Beijing 100083, Peoples R China

来源：

INFRARED PHYSICS & TECHNOLOGY | 2007年 / 50卷 / 2-3期

关键词：

quantum dots; spatial ordering; intersubband absorption;

D O I：

10.1016/j.infrared.2006.10.009

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We have investigated the intersubband absorption for spatially ordered and non-ordered quantum dots (QDs). It is found that the intersubband absorption of spatially ordered QDs is much stronger than that of non-ordered QDs. The enhanced absorption is attributed to the improved size uniformity concurrent with the spatial ordering for the growth condition employed. For the FTIR measurement under normal incidence geometry, using a undoped sample as reference can remove the interference effect due to multiple reflections. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：162 / 165

页数：4

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