skip to main content

Title: Experimental and theoretical study of polarized photoluminescence caused by anisotropic strain relaxation in nonpolar a-plane textured ZnO grown by a low-pressure chemical vapor deposition

Anisotropic strain relaxation and the resulting degree of polarization of photoluminescence (PL) in nonpolar a-plane textured ZnO are experimentally and theoretically studied. A thicker nonpolar a-plane textured ZnO film enhances the anisotropic in-plane strain relaxation, resulting in a larger degree of polarization of PL and better sample quality. Anisotropic in-plane strains, sample quality, and degree of polarization of PL in nonpolar a-plane ZnO are consequences of the degree of anisotropic in-plane strain relaxation. By the k·p perturbation approach, simulation results of the variation of the degree of polarization for the electronic transition upon anisotropic in-plane strain relaxation agree with experimental results.
Authors:
 [1] ; ;  [2] ;  [3] ;  [4] ;  [5]
  1. Department of Electronic Engineering, Ming Chuan University, Taoyuan 333, Taiwan (China)
  2. Department of Applied Physics, National University of Kaohsiung, Kaohsiung 811, Taiwan (China)
  3. Department of Traffic Science, Central Police University, Taoyuan 333, Taiwan (China)
  4. Green Energy and Environment Research Labs, Industrial Technology Research Institute, Hsinchu 310, Taiwan (China)
  5. Department of Physics and Center for Nanoscience and Nanotechnology, National Sun Yat-Sen University, Kaohsiung 804, Taiwan (China)
Publication Date:
OSTI Identifier:
22483185
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 107; Journal Issue: 2; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANISOTROPY; CHEMICAL VAPOR DEPOSITION; FILMS; PHOTOLUMINESCENCE; POLARIZATION; PRESSURE RANGE KILO PA; RELAXATION; SIMULATION; STRAINS; TEXTURE; VARIATIONS; ZINC OXIDES