Low-temperature wet chemical precipitation of YVO4: Bi 3+,Eu3+ nanophosphors via citrate precursors

Satoru Takeshita, Tetsuhiko Isobe, Tomohiro Sawayama, Seiji Niikura

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

YVO4:Bi3+,Eu3+ nanophosphors are prepared by low-temperature wet chemical precipitations in the presence of citrate ions. Transparently dispersed YVO4:Bi3+,Eu3+ nanophosphors crystallize from amorphous gel precursors through a gel-sol process. The homogeneity of Bi3+ doping process as well as the photoluminescence property are improved by using the homogeneous Bi3+ solution as a Bi3+ source instead of Bi3+ powder. YVO4:Bi3+,Eu3+ nanophosphor under the irradiation of near-UV light shows peculiar photobleaching behavior through the reduction from V5+ to V4+, but this photobleach is suppressed by subsequent hydrothermal treatment. The authors also discuss the advantage of transparency of YVO4:Bi3+,Eu3+ nanophosphor in terms of wavelength conversion as compared to micron-sized phosphor.

Original languageEnglish
Pages (from-to)127-136
Number of pages10
JournalProgress in Crystal Growth and Characterization of Materials
Volume57
Issue number4
DOIs
Publication statusPublished - 2011 Dec

Fingerprint

Photobleaching
Optical frequency conversion
citrates
sol-gel processes
Citric Acid
Ultraviolet radiation
Phosphors
Powders
Transparency
Sol-gel process
phosphors
homogeneity
Photoluminescence
Gels
Doping (additives)
Irradiation
gels
Ions
photoluminescence
irradiation

Keywords

  • Gel-sol synthesis
  • Luminescence
  • Nanophosphor
  • Photostability
  • Wavelength conversion

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Low-temperature wet chemical precipitation of YVO4 : Bi 3+,Eu3+ nanophosphors via citrate precursors. / Takeshita, Satoru; Isobe, Tetsuhiko; Sawayama, Tomohiro; Niikura, Seiji.

In: Progress in Crystal Growth and Characterization of Materials, Vol. 57, No. 4, 12.2011, p. 127-136.

Research output: Contribution to journalArticle

@article{589739923d6f45f48dd6b438d2bcea2a,
title = "Low-temperature wet chemical precipitation of YVO4: Bi 3+,Eu3+ nanophosphors via citrate precursors",
abstract = "YVO4:Bi3+,Eu3+ nanophosphors are prepared by low-temperature wet chemical precipitations in the presence of citrate ions. Transparently dispersed YVO4:Bi3+,Eu3+ nanophosphors crystallize from amorphous gel precursors through a gel-sol process. The homogeneity of Bi3+ doping process as well as the photoluminescence property are improved by using the homogeneous Bi3+ solution as a Bi3+ source instead of Bi3+ powder. YVO4:Bi3+,Eu3+ nanophosphor under the irradiation of near-UV light shows peculiar photobleaching behavior through the reduction from V5+ to V4+, but this photobleach is suppressed by subsequent hydrothermal treatment. The authors also discuss the advantage of transparency of YVO4:Bi3+,Eu3+ nanophosphor in terms of wavelength conversion as compared to micron-sized phosphor.",
keywords = "Gel-sol synthesis, Luminescence, Nanophosphor, Photostability, Wavelength conversion",
author = "Satoru Takeshita and Tetsuhiko Isobe and Tomohiro Sawayama and Seiji Niikura",
year = "2011",
month = "12",
doi = "10.1016/j.pcrysgrow.2011.10.007",
language = "English",
volume = "57",
pages = "127--136",
journal = "Progress in Crystal Growth and Characterization of Materials",
issn = "0960-8974",
publisher = "Elsevier Limited",
number = "4",

}

TY - JOUR

T1 - Low-temperature wet chemical precipitation of YVO4

T2 - Bi 3+,Eu3+ nanophosphors via citrate precursors

AU - Takeshita, Satoru

AU - Isobe, Tetsuhiko

AU - Sawayama, Tomohiro

AU - Niikura, Seiji

PY - 2011/12

Y1 - 2011/12

N2 - YVO4:Bi3+,Eu3+ nanophosphors are prepared by low-temperature wet chemical precipitations in the presence of citrate ions. Transparently dispersed YVO4:Bi3+,Eu3+ nanophosphors crystallize from amorphous gel precursors through a gel-sol process. The homogeneity of Bi3+ doping process as well as the photoluminescence property are improved by using the homogeneous Bi3+ solution as a Bi3+ source instead of Bi3+ powder. YVO4:Bi3+,Eu3+ nanophosphor under the irradiation of near-UV light shows peculiar photobleaching behavior through the reduction from V5+ to V4+, but this photobleach is suppressed by subsequent hydrothermal treatment. The authors also discuss the advantage of transparency of YVO4:Bi3+,Eu3+ nanophosphor in terms of wavelength conversion as compared to micron-sized phosphor.

AB - YVO4:Bi3+,Eu3+ nanophosphors are prepared by low-temperature wet chemical precipitations in the presence of citrate ions. Transparently dispersed YVO4:Bi3+,Eu3+ nanophosphors crystallize from amorphous gel precursors through a gel-sol process. The homogeneity of Bi3+ doping process as well as the photoluminescence property are improved by using the homogeneous Bi3+ solution as a Bi3+ source instead of Bi3+ powder. YVO4:Bi3+,Eu3+ nanophosphor under the irradiation of near-UV light shows peculiar photobleaching behavior through the reduction from V5+ to V4+, but this photobleach is suppressed by subsequent hydrothermal treatment. The authors also discuss the advantage of transparency of YVO4:Bi3+,Eu3+ nanophosphor in terms of wavelength conversion as compared to micron-sized phosphor.

KW - Gel-sol synthesis

KW - Luminescence

KW - Nanophosphor

KW - Photostability

KW - Wavelength conversion

UR - http://www.scopus.com/inward/record.url?scp=81855178289&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=81855178289&partnerID=8YFLogxK

U2 - 10.1016/j.pcrysgrow.2011.10.007

DO - 10.1016/j.pcrysgrow.2011.10.007

M3 - Article

AN - SCOPUS:81855178289

VL - 57

SP - 127

EP - 136

JO - Progress in Crystal Growth and Characterization of Materials

JF - Progress in Crystal Growth and Characterization of Materials

SN - 0960-8974

IS - 4

ER -