Site-Dependent Tb3+Luminescence by Energy Transfer from Ce3+in Ce3+-Tb3+Codoped LaLuO3

Shoichiro Nagashima, Kazushige Ueda, Takahisa Omata

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Ce3+-Tb3+codoped LaLuO3was prepared by doping Tb3+site-selectively at a La or Lu site and doping Ce3+simultaneously at a La site. X-ray diffraction analysis revealed the expansion and contraction of the unit-cell volume according to the substituting sites of Ce3+and Tb3+, confirming the occupation of Ce3+at a La site and Tb3+at a La or Lu site. Photoluminescence due to energy transfer from Ce3+to Tb3+was investigated by exciting the 4f-5d transition band of Ce3+. The site-dependent Tb3+luminescence spectra revealed that the energy transfer occurred from Ce3+to not only Tb3+at La sites but also Tb3+at Lu sites. Because Tb3+at both sites can show green luminescence by Ce3+4f-5d excitation, as well as Tb3+4f-5d excitation, in Ce3+-Tb3+codoped LaLuO3, the excitation wavelength range for Tb3+luminescence was widely extended up to 380 nm, which is attainable with near-UV LEDs.

Original languageEnglish
Pages (from-to)6499-6504
Number of pages6
JournalJournal of Physical Chemistry C
Issue number14
Publication statusPublished - 2022 Apr 14

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films


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