Combinatorial optimization of the atomic compositions for green-emitting YBO3: Ce3+,Tb3+ and red-emitting YBO3:Ce3+,Tb3+,Eu3+ phosphors using a microplate reader

Kohei Yano, Satoru Takeshita, Yoshiki Iso, Tetsuhiko Isobe

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Microplate readers are versatile devices that can rapidly measure the photoluminescence intensities of multiple samples, and are widely used in biological chemistry. In this work, using a commercial microplate reader, we attempted to optimize the atomic compositions of green-emitting phosphor Y1−x−yCexTbyBO3 and red-emitting phosphor Y1−x−y−zCexTbyEuzBO3. We filled 48 individual wells of an alumina microplate with aqueous solutions of nitrates of Y3+, Ce3+, Tb3+, and Eu3+ with different compositions, and then added an aqueous solution of boric acid to each well. After drying, the microplate was heated at 550 °C for 2 h in air, and then at 1100 °C for 3 h in a reducing atmosphere. Y1−x−yCexTbyBO3 absorbed near ultraviolet light through 4f → 5d transitions of Ce3+ and emitted green fluorescence corresponding to 4f → 4f transitions of Tb3+ through Ce3+ → Tb3+ energy transfer. Moreover, Y1−x−y−zCexTbyEuzBO3 emitted red fluorescence corresponding to 4f → 4f transitions of Eu3+ through Ce3+ → Tb3+ → Eu3+ energy transfer under near-ultraviolet light. Measurement of the photoluminescence intensity of each well by a microplate reader revealed that the optimized green and red phosphors were Y0.835Ce0.025Tb0.14BO3 and Y0.535Ce0.005Tb0.45Eu0.01BO3, respectively.

Original languageEnglish
Pages (from-to)17586-17592
Number of pages7
JournalRSC Advances
Volume7
Issue number29
DOIs
Publication statusPublished - 2017

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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