Raman scattering and band-gap variations of Al-doped ZnO nanoparticles synthesized by a chemical colloid process

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/28144

Title:	Raman scattering and band-gap variations of Al-doped ZnO nanoparticles synthesized by a chemical colloid process
Authors:	Lo,SS;Huang,D;Tu,CH;Hou,CH;Chen,CC
Contributors:	光電科學研究所
Keywords:	THIN-FILMS;PHOTOLUMINESCENCE;ARRAYS
Date:	2009
Issue Date:	2010-06-29 19:42:26 (UTC+8)
Publisher:	中央大學
Abstract:	This study synthesizes Al-doped ZnO (AZO) nanoparticles using a chemical colloid process. Raman scattering analysis shows that Al doping increases the lattice defects and induces Raman vibration modes of 651 cm(-1). The Raman shift of the active mode E-2 (high) of AZO nanoparticles shows the presence and increase in the stress in nanoparticles when the Al dopant concentration increases. Room-temperature photoluminescence (RT-PL) spectra of synthesized AZO nanoparticles exhibit strong UV emissions near the band edges. The RT-PL peak shifts to a higher photon energy region as the Al concentration increases, indicating a broadening of the band gap.
Relation:	JOURNAL OF PHYSICS D-APPLIED PHYSICS
Appears in Collections:	[Graduate Institute of Optics and Photonics] journal & Dissertation

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