The spontaneous formation of AlInN core-shell nanorod arrays with variable In concentration has been realized by ultrahigh-vacuum magnetron sputter epitaxy with Ti0.21Zr0.79N or VN seed layer assistance. The nanorods exhibit hexagonal cross sections with preferential growth along the c-axis. A core-shell rod structure with a higher In concentration in the core was observed by (scanning) transmission electron microscopy in combination with low-loss electron energy loss spectroscopy and energy dispersive X-ray spectroscopy. 5 K cathodoluminescence spectroscopy of Al0.86In0.14N nanorods revealed band edge emission at similar to 5.46 eV, which was accompanied by a strong defect-related emission at similar to 3.38 eV. (C) 2011 The Japan Society of Applied Physics
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Department of Materials Science and Engineering, Chiao Tung University, Hsinchu 300, TaiwanDepartment of Materials Science and Engineering, Chiao Tung University, Hsinchu 300, Taiwan
Kuo, Pai-Chia
Chen, San-Yuan
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Department of Materials Science and Engineering, Chiao Tung University, Hsinchu 300, TaiwanDepartment of Materials Science and Engineering, Chiao Tung University, Hsinchu 300, Taiwan
Chen, San-Yuan
Bow, Jong-Shing
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National E. B. Tech. Co. Ltd., No.18, Lane 18, Sanmin St., Taipei, TaiwanDepartment of Materials Science and Engineering, Chiao Tung University, Hsinchu 300, Taiwan