Co-doped Y2O3:Tb3+/Tm3+ multicolor emitting phosphors for thermometry

Naohiro Ishiwada, Satoko Fujioka, Toshihisa Ueda, Takeshi Yokomori

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)


In this study, the new temperature-dependent phosphor, Y2O 3:Tb3+=Tm3+, was investigated for high-temperature thermometry. The photoluminescence intensity at 456nm emitted from Tm3+ was strong at temperatures higher than 1100K, whereas the peak intensities emitted from Tb3+ decreased due to the thermal quenching effect. Thus, the intensity ratio between those emissions showed an appropriate variation for thermometry over a wide temperature range. In addition, the phosphors showed a distinct change of visible emission colors from green to blue with increasing temperature. These findings suggest the applicability of these phosphors in visual thermo-sensors.

Original languageEnglish
Pages (from-to)760-762
Number of pages3
JournalOptics Letters
Issue number5
Publication statusPublished - 2011 Mar 1

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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