Growth of nonpolar [formula] ZnO films on LaAlO3 (001) substrates

Yen-Teng Ho; Wei-Lin Wang; Chun-Yen Peng; Mei-Hui Liang; Jr-Sheng Tian; Chih-Wei Lin; Li Chang
September 2008
Applied Physics Letters;9/22/2008, Vol. 93 Issue 12, p121911
Academic Journal
Nonpolar [formula] ZnO films were grown on LaAlO3 (001) single crystal substrates at temperature from 300 to 750 °C by pulsed laser deposition method. The films were examined using x-ray diffraction, reflection high energy electron diffraction, and photoluminescence measurements for the crystallinity. The surface morphology of ZnO films from atomic force microscopy exhibits L-shaped domains. Cross-sectional transmission electron microscopy with selected area diffraction reveals two types of a-plane ZnO domains perpendicular to each other with in-plane orientation relationships of [0001]ZnO∥[110]LAO and [1100]ZnO∥[110]LAO.


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