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Title
Japanese: 
English:Ultraviolet excitonic laser action at room temperature in ZnO nanocrystalline epitaxial films 
Author
Japanese: 川崎 雅司, 大友 明, 鯉沼 秀臣, 櫻井洋介, 吉田泰彦, 湯 子康, Yu Ping, Wong Goerge K. L., 瀬川 勇三朗.  
English: M. Kawasaki, A. Ohtomo, H. Koinuma, Y. Sakurai, Y. Yoshida, Z. K. Tang, P. Yu, G. K. L. Wong, Y. Segawa.  
Language English 
Journal/Book name
Japanese: 
English:Silicon Carbide, Iii-Nitrides and Related Materials, Pts 1 and 2 
Volume, Number, Page Vol. 264-2        pp. 1459-1462
Published date Dec. 1998 
Publisher
Japanese: 
English:Trans Tech Publications 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
Official URL <Go to ISI>://000072751000347
 
DOI https://doi.org/10.4028/www.scientific.net/MSF.264-268.1459
Abstract We have observed ultraviolet laser emission at 3.2eV from optically pumped ZnO nanocrystal thin films at room temperature. ZnO films were epitaxially grown on sapphire substrates by laser molecular beam epitaxy. Closely packed and hexagonally shaped nanocrystals and well-defined grain boundaries were naturally formed. The grain boundaries between nanocrystals serve not only as barriers for confinement of excitons, but also as mirrors to form a Fabry-Perot cavity.

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