Sol-gel processing and luminescent properties of rare-earth oxyfluoride materials

Shinobu Fujihara, Takayoshi Kato, Toshio Kimura

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

Luminescent rare-earth oxyfluoride materials were prepared by a sol-gel method using trifluoroacetic acid as a fluorine source. Crystalline (La, Eu)OF powders and thin films were obtained by heating gels at typically 600-800°C. Transparent SiO2-LaOF glass-ceramic thin films were also prepared by mixing the trifluoroacetate sols and silica sols, spin-coating on silica glass substrates and heating at temperatures 600-900°C. Eu3+ ions doped in the oxyfluoride materials exhibited a strong red 5D07F2 emission (611 nm) by a charge-transfer (O2--Eu3+) excitation with ultra-violet radiation (265 nm). It was strongly suggested that the Eu3+ activators were preferentially incorporated into the crystalline LaOF phase in the SiO2-LaOF glass-ceramics.

Original languageEnglish
Pages (from-to)953-956
Number of pages4
JournalJournal of Sol-Gel Science and Technology
Volume26
Issue number1-3
DOIs
Publication statusPublished - 2003 Jan

Fingerprint

oxyfluorides
Trifluoroacetic Acid
Glass ceramics
Polymethyl Methacrylate
Sols
Rare earths
Sol-gels
rare earth elements
gels
ceramics
Crystalline materials
Trifluoroacetic acid
Heating
Thin films
heating
Fluorine
glass
Spin coating
silica glass
Fused silica

Keywords

  • Glass-ceramics
  • LaOF
  • Oxyfluorides
  • Photoluminescence
  • Sol-gel

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this

Sol-gel processing and luminescent properties of rare-earth oxyfluoride materials. / Fujihara, Shinobu; Kato, Takayoshi; Kimura, Toshio.

In: Journal of Sol-Gel Science and Technology, Vol. 26, No. 1-3, 01.2003, p. 953-956.

Research output: Contribution to journalArticle

@article{ee16f742890d4a52ba91807bf9e61a3a,
title = "Sol-gel processing and luminescent properties of rare-earth oxyfluoride materials",
abstract = "Luminescent rare-earth oxyfluoride materials were prepared by a sol-gel method using trifluoroacetic acid as a fluorine source. Crystalline (La, Eu)OF powders and thin films were obtained by heating gels at typically 600-800°C. Transparent SiO2-LaOF glass-ceramic thin films were also prepared by mixing the trifluoroacetate sols and silica sols, spin-coating on silica glass substrates and heating at temperatures 600-900°C. Eu3+ ions doped in the oxyfluoride materials exhibited a strong red 5D0 → 7F2 emission (611 nm) by a charge-transfer (O2--Eu3+) excitation with ultra-violet radiation (265 nm). It was strongly suggested that the Eu3+ activators were preferentially incorporated into the crystalline LaOF phase in the SiO2-LaOF glass-ceramics.",
keywords = "Glass-ceramics, LaOF, Oxyfluorides, Photoluminescence, Sol-gel",
author = "Shinobu Fujihara and Takayoshi Kato and Toshio Kimura",
year = "2003",
month = "1",
doi = "10.1023/A:1020749027290",
language = "English",
volume = "26",
pages = "953--956",
journal = "Journal of Sol-Gel Science and Technology",
issn = "0928-0707",
publisher = "Springer Netherlands",
number = "1-3",

}

TY - JOUR

T1 - Sol-gel processing and luminescent properties of rare-earth oxyfluoride materials

AU - Fujihara, Shinobu

AU - Kato, Takayoshi

AU - Kimura, Toshio

PY - 2003/1

Y1 - 2003/1

N2 - Luminescent rare-earth oxyfluoride materials were prepared by a sol-gel method using trifluoroacetic acid as a fluorine source. Crystalline (La, Eu)OF powders and thin films were obtained by heating gels at typically 600-800°C. Transparent SiO2-LaOF glass-ceramic thin films were also prepared by mixing the trifluoroacetate sols and silica sols, spin-coating on silica glass substrates and heating at temperatures 600-900°C. Eu3+ ions doped in the oxyfluoride materials exhibited a strong red 5D0 → 7F2 emission (611 nm) by a charge-transfer (O2--Eu3+) excitation with ultra-violet radiation (265 nm). It was strongly suggested that the Eu3+ activators were preferentially incorporated into the crystalline LaOF phase in the SiO2-LaOF glass-ceramics.

AB - Luminescent rare-earth oxyfluoride materials were prepared by a sol-gel method using trifluoroacetic acid as a fluorine source. Crystalline (La, Eu)OF powders and thin films were obtained by heating gels at typically 600-800°C. Transparent SiO2-LaOF glass-ceramic thin films were also prepared by mixing the trifluoroacetate sols and silica sols, spin-coating on silica glass substrates and heating at temperatures 600-900°C. Eu3+ ions doped in the oxyfluoride materials exhibited a strong red 5D0 → 7F2 emission (611 nm) by a charge-transfer (O2--Eu3+) excitation with ultra-violet radiation (265 nm). It was strongly suggested that the Eu3+ activators were preferentially incorporated into the crystalline LaOF phase in the SiO2-LaOF glass-ceramics.

KW - Glass-ceramics

KW - LaOF

KW - Oxyfluorides

KW - Photoluminescence

KW - Sol-gel

UR - http://www.scopus.com/inward/record.url?scp=0037268358&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037268358&partnerID=8YFLogxK

U2 - 10.1023/A:1020749027290

DO - 10.1023/A:1020749027290

M3 - Article

VL - 26

SP - 953

EP - 956

JO - Journal of Sol-Gel Science and Technology

JF - Journal of Sol-Gel Science and Technology

SN - 0928-0707

IS - 1-3

ER -