English  |  正體中文  |  简体中文  |  Items with full text/Total items : 28588/40619
Visitors : 4198560      Online Users : 55
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Adv. Search
LoginUploadHelpAboutAdminister

Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/47507

Title: Peculiar near-band-edge emission of polarization-dependent XEOL from a non-polar a-plane ZnO wafer
Authors: Wen-Feng Hsieh
Bi-Hsuan Lin
Yung-Chi Wu
Huang-Yeh Chen
Shao-Chin Tseng
Jian-Xing Wu
Xiao-Yun Li
Bo-Yi Chen
Chien-Yu Lee
Gung-Chian Yin
Shih-Hung Chang
Mau-Tsu Tang
Contributors: 國立臺灣海洋大學:光電科學研究所
Date: 2018-02
Issue Date: 2018-07-31T02:17:33Z
Publisher: Optics Express
Abstract: Abstract: Polarization-dependent hard X-ray excited optical luminescence (XEOL) was used to study not only the optical properties but also the crystallographic orientations of a non-polar a-plane ZnO wafer. In addition to a positive-edge jump and extra oscillations in the near-band-edge (NBE) XEOL yield, we observed a blue shift of the NBE emission peak that follows the polarization-dependent X-ray absorption near-edge structure (XANES) as the X-ray energy is tuned across the Zn K-edge. This NBE blue shift is caused by the larger X-ray absorption, generating higher free carriers to reduce the exciton-LO phonon coupling, which causes a decrease in the exciton activation energy. The extra oscillations in XANES and XEOL as the polarization is set parallel to the c-axis is attributed to simultaneous excitations of the Zn 4p - O 2p π-bond along the c-axis and the bilayer σ-bond, whereas only the σ-bond is excited when the polarization is perpendicular to the c-axis. The polarization-dependent XEOL spectra can be used to determine the crystallographic orientations.
Relation: 26(3) pp.2731-2739
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/47507
Appears in Collections:[光電科學研究所] 期刊論文

Files in This Item:

File Description SizeFormat
index.html0KbHTML42View/Open


All items in NTOUR are protected by copyright, with all rights reserved.

 


著作權政策宣告: 本網站之內容為國立臺灣海洋大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用,請合理使用本網站之內容,以尊重著作權人之權益。
網站維護: 海大圖資處 圖書系統組
DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback