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Title
Japanese: 
English:Emission from the higher-order excitons in ZnO films grown by laser molecular-beam epitaxy 
Author
Japanese: 塚崎 敦, 大友 明, 川崎 雅司, 牧野 哲征, Chia Chin Hau, 瀬川 勇三朗, 鯉沼 秀臣.  
English: A. Tsukazaki, A. Ohtomo, M. Kawasaki, T. Makino, C. H. Chia, Y. Segawa, H. Koinuma.  
Language English 
Journal/Book name
Japanese: 
English:Applied Physics Letters 
Volume, Number, Page Vol. 84    No. 19    pp. 3858-3860
Published date May 2004 
Publisher
Japanese: 
English: 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
File
Official URL <Go to ISI>://000221210100046
 
DOI https://doi.org/10.1063/1.1748847
Abstract Epitaxial ZnO thin films were grown by laser molecular-beam epitaxy on lattice-matched ScAlMgO4 substrates following the deposition and annealing of suitable buffer layers. The samples were characterized by low-temperature photoluminescence (PL), absorption, and reflectivity measurements. PL from higher order (n=2) excitons (A exciton) was observed at temperatures lower than 40 K. The absorption spectrum contained lines and the reflection spectrum exhibited anomalies that were assigned to the excited-states (n=2,3) of A and B excitons. The optical quality could be improved dramatically by using annealed ZnO or MgZnO buffer layers.

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