Optical Properties of ZnCdSe/ZnMgSe Multiple Quantum Wells Grown by Molecular Beam Epitaxy

Chin. Phys. Lett.

2002, Vol. 19

Issue (8): 1152-1154 DOI:

Original Articles

Optical Properties of ZnCdSe/ZnMgSe Multiple Quantum Wells Grown by Molecular Beam Epitaxy

LÜ You-Ming;SHEN De-Zhen;LIU Yi-Chun;LI Bing-Hui;LIANG Hong-Wei;ZHANG Ji-Ying;FAN Xi-Wu

Key Laboratory of Excited State Processes, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130022

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LÜ, You-Ming, SHEN De-Zhen et al 2002 Chin. Phys. Lett. 19 1152-1154

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Abstract OWe 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 free exciton luminescence of the quantum wells can be observed from 80 K to 300 K. 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 the confined optical modes and folded optical modes. This confirms the formation of a multilayer system with a higher crystalline quality.

Keywords: 63.22.+m 81.15.Hi 78.55.-m 68.65.+g

Published: 01 August 2002

PACS:	63.22.+m
	81.15.Hi	(Molecular, atomic, ion, and chemical beam epitaxy)
	78.55.-m	(Photoluminescence, properties and materials)
	68.65.+g

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2002/V19/I8/01152

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	You-Ming
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	ZHANG Ji-Ying
	FAN Xi-Wu

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