Anatase TiO2 thin films grown on lattice-matched LaAiO3 substrate by laser molecular-beam epitaxy

M. Murakami, Y. Matsumoto, K. Nakajima, T. Makino, Y. Segawa, T. Chikyow, P. Ahmet, M. Kawasaki, H. Koinuma

研究成果: Article査読

149 被引用数 (Scopus)

抄録

Epitaxial anatase thin films were fabricated on lattice-matched (-0.2%) LaAIO3 (001) substrates in the layer-by-layer fashion by laser molecular-beam epitaxy. X-ray diffraction and transmission electron microscope show the films to exhibit high crystallinity and atomically defined interfaces. By virtue of the adoption of LaAIO3 substrate, which is transparent to photoexcitation of TiO2, optical band gaps could be determined to be 3.3 eV at room temperature. A photoluminescence band due to recombination of self-trapped excitons was observed at 5 K to give the peak maximum at 2.2 eV. As a result of the high degree of orientation of the epitaxial films, anisotropic optical absorption was clearly observed.

本文言語English
ページ(範囲)2664-2666
ページ数3
ジャーナルApplied Physics Letters
78
18
DOI
出版ステータスPublished - 2001 4 30
外部発表はい

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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