Control of photoluminescence in Ca3–3x /7Y2x /7(PO4)2:Eu2+ phosphors by migration of the dopant |
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| Authors: | Jin Han Wenli Zhou Miao Tang Shixun Lian |
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| Institution: | 1. Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), 410081, P.R. China;2. Key Laboratory of Sustainable Resources Processing and Advanced Materials of Hunan Province College, College of Chemistry and Chemical Engineering, 410081, P.R. China |
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| Abstract: | A series of Ca3–3x /7Y2x /7(PO4)2:Eu2+ phosphors were synthesized by conventional solid‐state reaction. The photoluminescence spectra elucidate that the evolution of emission hue from violet–blue to blue–greenish could be realized by incorporating Y3+ ions. The aliovalent substitution of Y3+ for Ca2+ forms cationic vacancies (h denotes a vacancy) at Ca(4) site according to the formula 3Ca2+ = 2Y3+ + h, and then facilitates the migration of dopant Eu2+ from Ca(4) site to other sites in host lattice. (© 2015 WILEY‐VCH Verlag GmbH &Co. KGaA, Weinheim) |
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| Keywords: | phosphors photoluminescence Eu2+ dopants cation substitution Ca3(PO4)2 solid‐state reaction |
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