Optical and electrical properties of ZnMnO layers grown by peroxide MBE

被引:31
作者
Avrutin, V
Izyumskaya, N
Özgür, Ü
El-Shaer, A
Lee, H
Schoch, W
Reuss, F
Beshenkov, VG
Pustovit, AN
Mofor, AC
Bakin, A
Morkoç, H
Waag, A
机构
[1] Kyung Hee Univ, Dept Phys, Suwon 449701, South Korea
[2] Univ Ulm, Dept Semicond Phys, D-89081 Ulm, Germany
[3] Tech Univ Braunschweig, Inst Semicond Technol, D-38106 Braunschweig, Germany
[4] Russian Acad Sci, Inst Microelect Technol, Chernogolovka 142432, Moscow Region, Russia
[5] Virginia Commonwealth Univ, Dept Elect Engn, Richmond, VA 23284 USA
关键词
zinc oxide ZnO; ZnMnO; diluted magnetic semiconductors DMS; band gap; photoluminescence; optical absorption; molecular beam epitaxy MBE;
D O I
10.1016/j.spmi.2005.08.051
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
We studied the structural and electronic properties of Zn1-xMnxO (0 < x < 0.5) layers grown by peroxide molecular beam epitaxy. Hall effect measurements showed that the layers were highly resistive, pointing to strong electrical compensation of the Zn1-xMnxO films by Mn incorporation. The lattice parameter c was found to increase linearly with increasing x for low Mn concentrations and tended to saturate for heavily doped Films (x >= 0.2), Suggesting a possible second-phase precipitation. Optical transmission measurements revealed an increase in the band gap of Zn1-xMnxO and an enhancement of the broad below-band-gap absorption associated with Mn ions with increasing Mn content. However, no blueshift in the near-band-edge emission was detected in the photoluminescence spectra. (C) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码:291 / 298
页数:8
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