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Title
Japanese: 
English:Stimulated emission induced by exciton-exciton scattering in ZnO/ZnMgO multiquantum wells up to room temperature 
Author
Japanese: 孫 漢東, 牧野 哲征, Tuan N. T., 瀬川 勇三朗, 湯 子康, Wong Goerge K. L., 川崎 雅司, 大友 明, 田村 謙太郎, 鯉沼 秀臣.  
English: H. D. Sun, T. Makino, N. T. Tuan, Y. Segawa, Z. K. Tang, G. K. L. Wong, M. Kawasaki, A. Ohtomo, K. Tamura, H. Koinuma.  
Language English 
Journal/Book name
Japanese: 
English:Applied Physics Letters 
Volume, Number, Page Vol. 77    No. 26    pp. 4250-4252
Published date Dec. 2000 
Publisher
Japanese: 
English: 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
File
Official URL <Go to ISI>://000166120500002
 
DOI https://doi.org/10.1063/1.1333687
Abstract The mechanism of ultraviolet stimulated emission was investigated in ZnO/ZnMgO multiquantum wells. Stimulated emission induced by exciton-exciton scattering occurred throughout a range of temperatures from 5 K to room temperature. At temperatures higher than 160 K, stimulated emission due to electron-hole plasma recombination was also observed with a higher excitation threshold than that of exciton-exciton scattering. The exciton binding energies of multiquantum wells were larger than that of bulk ZnO and increased with a decrease in the well widths. This enhancement of exciton binding energy is due to the quantum-confinement effect and is favorable for the stability of exciton states.

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