標題: Structural and optical properties of ZnMgO nanostructures formed by Mg in-diffused ZnO nanowires
作者: Pan, Ching-Ju
Hsu, Hsu-Cheng
Cheng, Hsin-Ming
Wu, Chun-Yi
Hsieh, Wen-Feng
光電工程學系
Department of Photonics
關鍵字: photoluminescence;Raman spectroscopy;ZnO
公開日期: 1-Apr-2007
摘要: ZnMgO nanostructures with wurtzite phase were prepared by thermal diffusion of Mg into the ZnO nanowires. As ZnO light-emitting devices have been operated by using ZnMgO layers as energy barrier layers to confine the carriers, it is essential to realize the characterization of ZnMgO particularly. In this work, the Mg content in Zn1-xMgxO alloy determined by X-ray diffraction (XRD) and photoluminescence (PL) shows a good coincidence. The variation of lattice constant and the blueshift of near-band-edge emission indicate that Zn2+ ions are successfully substituted by Mg2+ ions in the ZnO lattice. In Raman-scattering studies, the change of E-2(high) phonon line shape in ZnO:Mg nanostructures reveals the microscopic substitutional disorder. In addition to the host phonons of ZnO, two additional bands around 383 and 510cm(-1) are presumably attributed to the Mg-related vibrational modes. (C) 2007 Elsevier Inc. All rights reserved.
URI: http://dx.doi.org/10.1016/j.jssc.2007.01.014
http://hdl.handle.net/11536/10980
ISSN: 0022-4596
DOI: 10.1016/j.jssc.2007.01.014
期刊: JOURNAL OF SOLID STATE CHEMISTRY
Volume: 180
Issue: 4
起始頁: 1188
結束頁: 1192
Appears in Collections:Articles


Files in This Item:

  1. 000246323400004.pdf