Tuning of Bi3+-related photoemission in the Sc2O3 : Bi3+ phosphor

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

2 Scopus Citations
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Author(s)

  • Wenyu Li
  • Minghua Yang
  • Guohuan Sun
  • Fengwen Kang

Detail(s)

Original languageEnglish
Pages (from-to)7015-7019
Journal / PublicationJournal of Materials Science: Materials in Electronics
Volume29
Issue number8
Online published31 Jan 2018
Publication statusPublished - Apr 2018

Abstract

In this work, we report a kind of UV converted single-phased tunable Sc2O3:Bi3+ phosphor, which enables generating the color tuning from blue to green upon excitation at the wavelength range of 245–380 nm. The photoluminescence (PL) spectra reveal that the tunable colors are due to regular modulation of the photoemission intensity between three Bi3+-related luminescence centers (i.e., ~ 356 nm for Bi1, ~ 407 nm for Bi2, and ~ 489 nm for Bi3), leading to the color tuning forth and back between blue and green. Together with the structural analysis, our spectral results indicate that the three Bi3+-related centers come from three different Sc3+ sites and, more importantly, two of them [i.e., Bi3 and Bi2], which locate respectively at the same Sc3+ sites of the crystal lattice with the point symmetry C2 and C3i, feature controllable yet inefficiency energy transfer behavior. A possible mechanistic scheme, which bases on the PL observations, is constructed to illustrate the Bi3+-related color tuning more clearly.

Citation Format(s)

Tuning of Bi3+-related photoemission in the Sc2O3 : Bi3+ phosphor. / Li, Wenyu; Yang, Minghua; Sun, Guohuan; Kang, Fengwen.

In: Journal of Materials Science: Materials in Electronics, Vol. 29, No. 8, 04.2018, p. 7015-7019.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review