Solvothermal synthesis of YBO3: Ce3+, Tb3+ nanophosphor: influence of B/(Y + Ce + Tb) ratio on particle size and photoluminescence intensity

Akihiro Nohara, Satoru Takeshita, Yoshiki Iso, Tetsuhiko Isobe

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Well-dispersed YBO3:Ce3+, Tb3+ nanoparticles of 30–75 nm in size were prepared by a size-controllable solvothermal method in a 1,4-butanediol/water mixed solvent. The mean particle size could be increased from 32 to 73 nm by increasing the B/(Y + Ce + Tb) ratio in the starting materials from 1 to 3. Transmission electron microscopy, specific surface area analysis, and dynamic light scattering measurements confirmed that the nanoparticles were highly dispersed in solvent without any aggregation. Subsequently, the relationship between particle size and photoluminescence (PL) intensity was investigated. The nanoparticles showed green emission corresponding to 4f → 4f transitions of Tb3+ under near-UV excitation. The PL intensity and quantum yield increased with increasing particle size, thus indicating that surface defects acted as the predominant PL quenchers within the studied size range.

Original languageEnglish
Pages (from-to)3311-3317
Number of pages7
JournalJournal of Materials Science
Volume51
Issue number7
DOIs
Publication statusPublished - 2016 Apr 1

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Photoluminescence
Particle size
Nanoparticles
Surface defects
Quantum yield
Dynamic light scattering
Specific surface area
Agglomeration
Transmission electron microscopy
Water
1,4-butanediol

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Solvothermal synthesis of YBO3 : Ce3+, Tb3+ nanophosphor: influence of B/(Y + Ce + Tb) ratio on particle size and photoluminescence intensity. / Nohara, Akihiro; Takeshita, Satoru; Iso, Yoshiki; Isobe, Tetsuhiko.

In: Journal of Materials Science, Vol. 51, No. 7, 01.04.2016, p. 3311-3317.

Research output: Contribution to journalArticle

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