The Effect of Sr2+ on Luminescence of Ce3+-Doped (Ca,Sr)2Al2SiO7

Litian Lin, Rui Shi, Rongfu Zhou, Qi Peng, Chunmeng Liu, Ye Tao, Yan Huang, Pieter Dorenbos, Hongbin Liang

Research output: Contribution to journalArticleScientificpeer-review

16 Citations (Scopus)

Abstract

A series of Ce3+-doped (Ca,Sr)2Al2SiO7 phosphors with different Ce3+ and Ca2+/Sr2+ concentrations were prepared by a high temperature solid-state reaction technique. To get insight into the structure-luminescence relationship, the impact of incorporation of Sr2+ on structure of (Ca,Sr)2Al2SiO7 was first investigated via Rietveld refinement of high quality X-ray diffraction (XRD) data, and then the VUV-UV excitation and UV-vis emission spectra of (Ca,Sr)2Al2SiO7:Ce3+ were collected at low temperature. The results reveal that the crystal structure evolution of (Ca,Sr)2Al2SiO7:Ce3+ has influences on band gaps and Ce3+ luminescence properties including 4f-5di (i = 1-5) transition energies, radiative lifetime, emission intensity, quantum efficiency, and thermal stability. Moreover, the influence of Sr2+ content on the energy of Eu3+-O2- charge-transfer states (CTS) in (Ca,Sr)2Al2SiO7:Eu3+ was studied in order to construct vacuum referred binding energy (VRBE) schemes with the aim to further understand the luminescence properties of (Ca,Sr)2Al2SiO7:Ce3+. Finally, X-ray excited luminescence (XEL) spectra were measured to evaluate the possibility of (Ca,Sr)2Al2SiO7:Ce3+ as a scintillation material.

Original languageEnglish
Pages (from-to)12476-12484
Number of pages9
JournalInorganic Chemistry: including bioinorganic chemistry
Volume56
Issue number20
DOIs
Publication statusPublished - 16 Oct 2017

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