Microstructural aspects of the CePO4: Tb3+ phosphor for luminescence sensing

Shinobu Fujihara, Yuina Takano, Mami Kitsuda

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Ceramic powders and thin films of cerium phosphate doped with trivalent terbium ions (CePO4:Tb3+) were synthesized from liquid phases, and their microstructures were modulated to investigate the relationship between the structure and the luminescence switching property responsive to redox reactions. Aqueous KMnO4 and L(+)-ascorbic acid solutions were used to evaluate the redox response of CePO4:Tb3+, appearing as luminescence quenching and recovering, respectively. The particle shape and size of the powder samples depended on heat-treatment conditions, which had also a large influence on the switching property. As-prepared nanorod particles were more sensitive to the redox reactions than heat-treated larger spherical particles, indicating that the switching was governed by the surface state of the particles. The thickness of the thin-film samples was also an important factor to determine the response to the redox reactions. In any case, our results demonstrate that it is important to control the microstructure of the CePO4:Tb3+ materials for their use in luminescence switching devices for the redox monitoring.

Original languageEnglish
Pages (from-to)411-417
Number of pages7
JournalInternational Journal of Applied Ceramic Technology
Volume12
Issue number2
DOIs
Publication statusPublished - 2015 Mar 1

Fingerprint

Phosphors
phosphors
Luminescence
Redox reactions
luminescence
Powders
Terbium
Thin films
Microstructure
Ascorbic acid
Surface states
Cerium
Nanorods
microstructure
ascorbic acid
terbium
Ascorbic Acid
Quenching
thin films
Phosphates

ASJC Scopus subject areas

  • Ceramics and Composites
  • Marketing
  • Materials Chemistry
  • Condensed Matter Physics

Cite this

Microstructural aspects of the CePO4 : Tb3+ phosphor for luminescence sensing. / Fujihara, Shinobu; Takano, Yuina; Kitsuda, Mami.

In: International Journal of Applied Ceramic Technology, Vol. 12, No. 2, 01.03.2015, p. 411-417.

Research output: Contribution to journalArticle

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