Optical studies of Y3(Al,Ga)5O12:Ce3+,Cr3+,Nd3+ nano-phosphors obtained by the Pechini method

Maria Luisa Saladino, Gerus, Grzeszkiewicz, Zhengfa Dai, Boiko, Gerus, Markowska, Dai, Hölsä, Dariusz Hreniak

Risultato della ricerca: Articlepeer review

10 Citazioni (Scopus)

Abstract

The Y-3(Al,Ga)(5)O-12:Ce3+,Cr3+,Nd3+ (YAGG) nano-phosphors with homogeneous particle-size distribution, low aggregation and average crystalline size of about 65 nm were obtained using a modified Pechini method. Only slight aggregation of the crystallites occurs after post-annealing at 1100 degrees C. The intense Ce3+ bands in the excitation spectra of the Ce3+,Cr3+,Nd3+ co-doped materials monitoring the Cr3+ emission at 690 nm indicate energy transfer from Ce(3+ )to Cr3+. Weak Nd3+ lines are observed, as well. In addition, the emission of Nd3+ at 1060 nm with excitation of Ce3+ and Cr3+ confirms the Ce3+/Cr3+ to Nd3+ energy transfer. The short average luminescence decay times for the Ce3+ emission indicate the Ce3+/Cr3+ to Nd3+ energy transfer. Eventually, the Y-3(Al,Ga)(5)O-12:Ce3+,Cr3+,Nd(3+ )nano-phosphors exhibit persistent luminescence originating from the 4f(3) -> 4f(3) transitions of Nd(3+ )which matches well to the first biological window to be used in bioimaging applications. (C) 2019 Published by Elsevier B.V. on behalf of Chinese Society of Rare Earths.
Lingua originaleEnglish
pagine (da-a)1132-1136
Numero di pagine5
RivistaJournal of Rare Earths
Volume37
Stato di pubblicazionePublished - 2019

All Science Journal Classification (ASJC) codes

  • ???subjectarea.asjc.1600.1600???
  • Geochemistry and Petrology

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