Photoluminescence analysis of Czochralski-grown lanthanum aluminate single crystals

Kotaro Kanai, Eiji Hirata*, Yoshimichi Ohki

*この研究の対応する著者

研究成果: Article査読

10 被引用数 (Scopus)

抄録

Photoluminescence (PL) spectra induced by ultraviolet photons were measured for Czochralski-grown lanthanum aluminate single crystals. Five PL peaks were observed at approximately 1.60, 1.64, 1.675, 2.0, and 2.8 eV at 10K, and the 2.8 eV PL disappears at 300 K. From PL excitation and vacuum ultraviolet absorption measurements, it is found that the 2.8 eV PL arises owing to the excitation of electrons to localized states in the band gap, and that PLs at approximately 1.60, 1.64, and 1.675 eV arise owing to the excitation of electrons to the conduction band. The 2.0 eV PL with a decay profile similar to that of the 2.8 eV PL is assumed to be caused by a process similar to that in the case of the 2.8 eV PL.

本文言語English
ページ(範囲)7980-7982
ページ数3
ジャーナルJapanese journal of applied physics
47
10 PART 1
DOI
出版ステータスPublished - 2008 10 1

ASJC Scopus subject areas

  • 工学(全般)
  • 物理学および天文学(全般)

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