Porous SiO2-BaMgF4:Eu(II) glass-ceramic thin films and their strong blue photoluminescence

Seiki Kitta; Shinobu Fujihara; Toshio Kimura

doi:10.1007/s10971-004-5799-z

Porous SiO₂-BaMgF₄:Eu(II) glass-ceramic thin films and their strong blue photoluminescence

Seiki Kitta, Shinobu Fujihara, Toshio Kimura

Department of Applied Chemistry

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

5 Citations (Scopus)

Abstract

Oxyfluoride glass-ceramic thin films of nominal 90SiO₂· 10(Ba_1-x Eu _x )MgF₄ compositions were prepared by sol-gel method starting from mixtures of metal trifluoroacetates and silicon alkoxide precursor solutions. Films were deposited on silica glass substrates by spin-coating and heating at 750°C. Eu²⁺ ions were preferentially incorporated into BaMgF₄ nanoparticles, which were dispersed in the silica glass matrix. The films exhibited broad-band blue photoluminescence (PL) in response to the ultraviolet light excitation. Addition of N,N-dimethylformamide to starting coating solutions resulted in a porous microstructure of the heat-treated films. Efficient UV excitation was promoted due to the Rayleigh scattering in the porous films; thereby the PL emissions could be strongly enhanced.

Original language	English
Pages (from-to)	263-266
Number of pages	4
Journal	Journal of Sol-Gel Science and Technology
Volume	32
Issue number	1-3
DOIs	https://doi.org/10.1007/s10971-004-5799-z
Publication status	Published - 2004 Dec

Keywords

Divalent europium
Fluorides
Glass-ceramics
Photoluminescence
Scattering

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Chemistry(all)
Biomaterials
Condensed Matter Physics
Materials Chemistry

Access to Document

10.1007/s10971-004-5799-z

Cite this

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title = "Porous SiO2-BaMgF4:Eu(II) glass-ceramic thin films and their strong blue photoluminescence",

abstract = "Oxyfluoride glass-ceramic thin films of nominal 90SiO2· 10(Ba1-x Eu x )MgF4 compositions were prepared by sol-gel method starting from mixtures of metal trifluoroacetates and silicon alkoxide precursor solutions. Films were deposited on silica glass substrates by spin-coating and heating at 750°C. Eu2+ ions were preferentially incorporated into BaMgF4 nanoparticles, which were dispersed in the silica glass matrix. The films exhibited broad-band blue photoluminescence (PL) in response to the ultraviolet light excitation. Addition of N,N-dimethylformamide to starting coating solutions resulted in a porous microstructure of the heat-treated films. Efficient UV excitation was promoted due to the Rayleigh scattering in the porous films; thereby the PL emissions could be strongly enhanced.",

keywords = "Divalent europium, Fluorides, Glass-ceramics, Photoluminescence, Scattering",

author = "Seiki Kitta and Shinobu Fujihara and Toshio Kimura",

note = "Funding Information: This work was supported by Grant-in-Aid for Scientific Research (No. 15760506) and for the 21st century COE program “KEIO Life Conjugate Chemistry” from the Ministry of Education, Culture, Sports, Science, and Technology, Japan.",

year = "2004",

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doi = "10.1007/s10971-004-5799-z",

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AU - Kitta, Seiki

AU - Fujihara, Shinobu

AU - Kimura, Toshio

N1 - Funding Information: This work was supported by Grant-in-Aid for Scientific Research (No. 15760506) and for the 21st century COE program “KEIO Life Conjugate Chemistry” from the Ministry of Education, Culture, Sports, Science, and Technology, Japan.

PY - 2004/12

Y1 - 2004/12

N2 - Oxyfluoride glass-ceramic thin films of nominal 90SiO2· 10(Ba1-x Eu x )MgF4 compositions were prepared by sol-gel method starting from mixtures of metal trifluoroacetates and silicon alkoxide precursor solutions. Films were deposited on silica glass substrates by spin-coating and heating at 750°C. Eu2+ ions were preferentially incorporated into BaMgF4 nanoparticles, which were dispersed in the silica glass matrix. The films exhibited broad-band blue photoluminescence (PL) in response to the ultraviolet light excitation. Addition of N,N-dimethylformamide to starting coating solutions resulted in a porous microstructure of the heat-treated films. Efficient UV excitation was promoted due to the Rayleigh scattering in the porous films; thereby the PL emissions could be strongly enhanced.

AB - Oxyfluoride glass-ceramic thin films of nominal 90SiO2· 10(Ba1-x Eu x )MgF4 compositions were prepared by sol-gel method starting from mixtures of metal trifluoroacetates and silicon alkoxide precursor solutions. Films were deposited on silica glass substrates by spin-coating and heating at 750°C. Eu2+ ions were preferentially incorporated into BaMgF4 nanoparticles, which were dispersed in the silica glass matrix. The films exhibited broad-band blue photoluminescence (PL) in response to the ultraviolet light excitation. Addition of N,N-dimethylformamide to starting coating solutions resulted in a porous microstructure of the heat-treated films. Efficient UV excitation was promoted due to the Rayleigh scattering in the porous films; thereby the PL emissions could be strongly enhanced.

KW - Divalent europium

KW - Fluorides

KW - Glass-ceramics

KW - Photoluminescence

KW - Scattering

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