Photoluminescence studies of Y2O3:Eu3 under high pressure

Jian Zhang, Hang Cui, Peifen Zhu, Chunli Ma, Xiaoxin Wu, Hongyang Zhu, Yanzhang Ma, Qiliang Cui

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35 Scopus citations

Abstract

The Eu-doped yttria (Y2O3:Eu3) has been investigated by the in situ high-pressure angle dispersive synchrotron X-ray diffraction (XRD) and the photoluminescence (PL) spectroscopy. The red shift and intensity ratio variation of emissions with increasing pressure were observed and elucidated. It was found that the red shift of emissions is related to the expansion of the f orbit of the Eu3 and the intensity ratio variation of emissions is ascribed to the change of the crystal field under high pressure. The pressure-induced changes in spectrum are related to the phase transition, which was confirmed by XRD pattern. The two high pressure phases were identified as the monoclinic (C2/m) phase and hexagonal (P-3m1) phase by the Rietveld refinement.

Original languageEnglish
Article number023502
JournalJournal of Applied Physics
Volume115
Issue number2
DOIs
StatePublished - Jan 14 2014

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