Open AccessFabrication of nonpolar ZnO film on γ-LiAlO2 substrate and its photo-luminescence properties
Author(s) -
Jianhua Zhou,
Shengming Zhou,
Huang Tao-Hua,
Lin Hui,
Shuzhi Li,
Jun Zou,
Jun Wang,
Rong Zhang
Publication year - 2007
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.56.4044
Subject(s) - materials science , full width at half maximum , substrate (aquarium) , luminescence , pulsed laser deposition , grain size , crystal (programming language) , photoluminescence , fabrication , thin film , anisotropy , optics , optoelectronics , nanotechnology , composite material , medicine , alternative medicine , pathology , oceanography , physics , computer science , programming language , geology
Nonpolar a-plane (1120) ZnO films were successfully grown on (302) γ-LiAlO2 substrate by pulsed laser deposition. When the temperature of the substrate was 350℃, the film was mix-oriented(a and c) with a wide distribution of crystal grain size, and the c-plane ZnO was dominant. When the temperature of the substrate was 500℃, pure (1120) ZnO film was formedwith the FWHM of ZnO (1120) rocking curve 0.65° and the grain size distribution narrowed. Its in-plane anisotropy was demonstrated by polarized transmission spectrum. The FWHM of the peak of near band emission in the PL spectra was found to be only 105meV for the sample with substrate temperature of 650℃indicating the large size and uniform distribution of crystal grains which was also confirmed by AFM.