Structure and Photoluminescence of Polycrystalline Mg<suB>x</suB>Zn<suB>1-x</suB>O Films

Chin. Phys. Lett.

2005, Vol. 22

Issue (11): 2973-2976 DOI:

Original Articles

Structure and Photoluminescence of Polycrystalline Mg_xZn_1-xO Films

ZHAO Yi-Kun¹;LIAN Jie¹;WANG Qing-Pu¹;ZHANG Xi-Jian²;ZHANG Sa-Sa¹;WANG Gong-Tang³

¹School of Information Science and Engineering, Shandong University, Jinan 250100 ²School of Physics and Microelectronics, Shandong University, Jinan 250100 ³College of Physics, Shandong Normal University, Jinan 250014

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ZHAO Yi-Kun, LIAN Jie, WANG Qing-Pu et al 2005 Chin. Phys. Lett. 22 2973-2976

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Abstract Different photoluminescence (PL) spectra are observed for rf magnetron sputtered polycrystalline Mg_0.25Zn_0.75O and Mg_0.37Zn_0.63O films on silicon substrates when excited by different wavelengths. When the excitation wavelength is 280nm, a UV emission peak at 370nm and a blue peak at 462nm are generated for the Mg_0.25Zn_0.75O film, and those two peaks for the Mg_0.37Zn_0.63O film shift to 366nm and 466nm, respectively. The wavelengths of the PL peaks are related to the excitation wavelength. The stronger peak is obtained in the blue band due to a large number of oxygen vacancies caused by excess Zn and Mg atoms, while the weaker peak is obtained in the ultraviolet band.

Keywords: 81.15.Cd 68.55.Jk 78.55.Et

Published: 01 November 2005

PACS:	81.15.Cd	(Deposition by sputtering)
	68.55.Jk
	78.55.Et	(II-VI semiconductors)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2005/V22/I11/02973

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	ZHAO Yi-Kun
	LIAN Jie
	WANG Qing-Pu
	ZHANG Xi-Jian
	ZHANG Sa-Sa
	WANG Gong-Tang

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