Structure and optical properties of ZnO/Mg_0.2_Zn_0.8_O superlattices
抄録
ZnO/Mg0.2Zn0.8O superlattices with a band-gap offset of about 0.5 eV were epitaxially grown by laser molecular-beam epitaxy on a sapphire(0001) substrate using a ZnO buffer layer. The superlattice structure with a period ranging from 8 to 18 nm was clearly verified by cross-sectional transmission electron microscopy, Auger depth profile, and x-ray diffraction. As the well layer thickness decreased below 5 nm, the photoluminescence peak and absorption edge in the photoluminescence excitation spectra showed a blueshift, indicating a quantum-size effect.
収録刊行物
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- Applied Physics Letters
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Applied Physics Letters 75 (7), 980-982, 1999-07
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詳細情報 詳細情報について
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- CRID
- 1571980077725581952
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- NII論文ID
- 120006581062
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- ISSN
- 00036951
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- 本文言語コード
- en
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- データソース種別
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