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Ultraviolet-induced erasable photochromism in bilayer metal oxide films

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Title: Ultraviolet-induced erasable photochromism in bilayer metal oxide films
Authors: Terakado, Nobuaki Browse this author
Tanaka, Keiji Browse this author →KAKEN DB
Nakazawa, Akira Browse this author
Keywords: Oxide film
Wide-gap semiconductor
Issue Date: Sep-2011
Publisher: Elsevier
Journal Title: Solid State Communications
Volume: 151
Issue: 18
Start Page: 1285
End Page: 1287
Publisher DOI: 10.1016/j.ssc.2011.05.037
Abstract: We demonstrate that the optical transmittance of bilayer samples consisting of pyrolytically coated amorphous Mg-Sn-O and metal oxide films such as In2O3 and SnO2 decreases upon ultraviolet illumination, which can be recovered by annealing in air at ∼300℃. Spectral, structural, and compositional studies suggest that this photochromic phenomenon is induced by photoelectronic excitation in the Mg-Sn-O film, electron injection into the metal oxide, which becomes negatively charged, and subsequent formation of metallic particles, which absorb and/or scatter visible light.
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 田中 啓司

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