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The dependence of photoluminescence (PL) properties of Eu3+ activated two typical vanadates Ca3(VO4)2 and Ca(VO3)2 on the crystal structure was discussed experimentally and theoretically. Compared with the broad PL excitation spectrum of Ca3(VO4)2: Eu with the peak at 339 nm, a 61-nm redshift of Ca(VO3)2: Eu (at 400 nm) can be found. Under the excitation of near-UV light, the PL spectra of Ca3(VO4...
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