Abstract
Epitaxial anatase thin films were fabricated on lattice-matched (−0.2%) LaAlO3 (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 LaAlO3 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.
References
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Dates
Type | When |
---|---|
Created | 23 years, 1 month ago (July 26, 2002, 10:16 a.m.) |
Deposited | 1 year, 6 months ago (Feb. 3, 2024, 3 p.m.) |
Indexed | 1 month, 3 weeks ago (July 2, 2025, 2:11 p.m.) |
Issued | 24 years, 3 months ago (April 30, 2001) |
Published | 24 years, 3 months ago (April 30, 2001) |
Published Print | 24 years, 3 months ago (April 30, 2001) |
@article{Murakami_2001, title={Anatase TiO2 thin films grown on lattice-matched LaAlO3 substrate by laser molecular-beam epitaxy}, volume={78}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.1365412}, DOI={10.1063/1.1365412}, number={18}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Murakami, M. and Matsumoto, Y. and Nakajima, K. and Makino, T. and Segawa, Y. and Chikyow, T. and Ahmet, P. and Kawasaki, M. and Koinuma, H.}, year={2001}, month=apr, pages={2664–2666} }