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Title
Japanese: 
English:Temperature dependence of excitonic absorption spectra in ZnO/Zn0.88Mg0.12O multiquantum wells grown on lattice-matched substrates 
Author
Japanese: 孫 漢東, 牧野 哲征, Tuan N. T., 瀬川 勇三朗, 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, M. Kawasaki, A. Ohtomo, K. Tamura, H. Koinuma.  
Language English 
Journal/Book name
Japanese: 
English:Applied Physics Letters 
Volume, Number, Page Vol. 78    No. 17    pp. 2464-2466
Published date Apr. 2001 
Publisher
Japanese: 
English: 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
File
Official URL <Go to ISI>://000168304600017
 
DOI https://doi.org/10.1063/1.1367300
Abstract The excitonic properties of high-quality ZnO/Zn0.88Mg0.12O multiquantum wells grown by laser-molecular-beam epitaxy were investigated using temperature-dependent optical absorption spectra from 5 K to room temperature. The strength of exciton-longitudinal-optical (LO) -phonon coupling was deduced from the temperature dependence of the linewidth of the fundamental excitonic peak. Effective reduction of the exciton-LO-phonon coupling with decreasing the well width was observed, which is consistent with the confinement-induced enhancement of the exciton binding energy. The thermal shift of the lowest excitonic energy is independent of well width, indicating that the strain effect is negligible for this material.

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