Photocrystallization of amorphous ZnO

Naoko Asakuma; Hiroshi Hirashima; Hiroaki Imai; Toshimi Fukui; Ayako Maruta; Motoyuki Toki; Koichi Awazu

doi:10.1063/1.1513197

Photocrystallization of amorphous ZnO

Naoko Asakuma, Hiroshi Hirashima, Hiroaki Imai, Toshimi Fukui, Ayako Maruta, Motoyuki Toki, Koichi Awazu

Department of Applied Chemistry

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

Structural changes stimulated by UV light irradiation for sol-gel-derived amorphous ZnO were investigated. Transformation of amorphous ZnO into the wurtzite phase was achieved by irradiation of 4.9 eV photons in air using a conventional low-pressure mercury lamp. On the other hand, the crystallization was not observed by UV irradiation in vacuum. Cleavage of the Zn-O network with electronic excitation and subsequent oxidation with activated oxygen species are deduced to be essential for the formation of the ordered structure from the amorphous phase.

Original language	English
Pages (from-to)	5707-5710
Number of pages	4
Journal	Journal of Applied Physics
Volume	92
Issue number	10
DOIs	https://doi.org/10.1063/1.1513197
Publication status	Published - 2002 Nov 15

ASJC Scopus subject areas

Physics and Astronomy(all)

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abstract = "Structural changes stimulated by UV light irradiation for sol-gel-derived amorphous ZnO were investigated. Transformation of amorphous ZnO into the wurtzite phase was achieved by irradiation of 4.9 eV photons in air using a conventional low-pressure mercury lamp. On the other hand, the crystallization was not observed by UV irradiation in vacuum. Cleavage of the Zn-O network with electronic excitation and subsequent oxidation with activated oxygen species are deduced to be essential for the formation of the ordered structure from the amorphous phase.",

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AU - Asakuma, Naoko

AU - Hirashima, Hiroshi

AU - Imai, Hiroaki

AU - Fukui, Toshimi

AU - Maruta, Ayako

AU - Toki, Motoyuki

AU - Awazu, Koichi

PY - 2002/11/15

Y1 - 2002/11/15

N2 - Structural changes stimulated by UV light irradiation for sol-gel-derived amorphous ZnO were investigated. Transformation of amorphous ZnO into the wurtzite phase was achieved by irradiation of 4.9 eV photons in air using a conventional low-pressure mercury lamp. On the other hand, the crystallization was not observed by UV irradiation in vacuum. Cleavage of the Zn-O network with electronic excitation and subsequent oxidation with activated oxygen species are deduced to be essential for the formation of the ordered structure from the amorphous phase.

AB - Structural changes stimulated by UV light irradiation for sol-gel-derived amorphous ZnO were investigated. Transformation of amorphous ZnO into the wurtzite phase was achieved by irradiation of 4.9 eV photons in air using a conventional low-pressure mercury lamp. On the other hand, the crystallization was not observed by UV irradiation in vacuum. Cleavage of the Zn-O network with electronic excitation and subsequent oxidation with activated oxygen species are deduced to be essential for the formation of the ordered structure from the amorphous phase.

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