화학공학소재연구정보센터
Materials Research Bulletin, Vol.106, 396-402, 2018
Structure, site-occpancy and luminescent properties of a novel blue phosphor Na3ZrMgP3O12: Eu2+
Single-phase Na3ZrMgP3O12: Eu2+ (NZMP: Eu2+) phosphor was prepared via high-temperature solid-state reaction. The crystal structure, lattice parameters and occupied sites of Eu2+-doped Na3ZrMgP3O12 are elucidated by powder X-ray diffraction and Rietveld refinement. It is found that majority of Eu2+ ions occupy 8-coordianted Na2 site while minority of Eu2+ are in 6-coordianted Na1 site of NZMP host. NZMP: Eu2+ shows a strong blue emission broadband with peak at 450 nm under UV excitation, which can be decomposed into two sub-bands peaking at 446 and 474 nm based on the substitution of two kinds of Na+ sites by Eu2+ ions. Luminescence properties of NZMP: Eu2+ phosphors were investigated in detail, including excitation and emission spectra, decay lifetime, concentration quenching and temperature-dependent emission spectra.