Optical properties of ZnCdSe/ZnMgSe multiple quantum wells grown by molecular beam epitaxy

被引：1
|
作者：
Lü, YM [1 ]
Shen, DZ [1 ]
Liu, YC [1 ]
Li, BH [1 ]
Liang, HW [1 ]
Zhang, JY [1 ]
Fan, XW [1 ]
机构：
[1] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, Key Lab Excited State Proc, Changchun 130022, Peoples R China
来源：
CHINESE PHYSICS LETTERS | 2002年 / 19卷 / 08期
关键词：
D O I：
10.1088/0256-307X/19/8/337
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We study the optical properties of ZnCdSe/ZnMgSe multiple quantum wells using photoluminescence (PL) and Raman scattering spectra. In the PL spectra, an intense emission band coming from the free exciton luminescence of the quantum wells can be observed from 80K to 300K. The exciton binding energy is evaluated by the dependence of PL intensity on the temperature, showing the behaviour of the better two-dimensional excitons. The result indicates that the enhancement of the confinement effect is due to containing Mg in the barrier layers. At room temperature, Raman scattering spectra are classified into confined optical modes and folded optical modes. This confirms the formation of a multilayer system with a higher crystalline quality.
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收藏
页码：1152 / 1154
页数：3
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