A new potential green-emitting erbium-activated α-Na3Y(VO4)2 nanocrystals for UV-excitable single-phase pc-WLED applications
作者： Linju Ann Jacob , S. Sisira , Kamal P. Mani , Kukku Thomas , Dinu Alexander
DOI: 10.1007/S42452-020-2873-2
关键词: Materials science 、 Microsecond 、 Phosphor 、 Photoluminescence 、 Chromaticity 、 Erbium 、 Quantum yield 、 High-resolution transmission electron microscopy 、 Analytical chemistry 、 Selected area diffraction
摘要: A potential UV-excitable green-emitting erbium-doped α-Na3Y(VO4)2 nanocrystalline phosphor has been successfully synthesized via facile citrate-based solution combustion method. The structural characterization of the sample was carried out using X-ray diffraction, TEM, HRTEM, SAED, EDS and FTIR analysis. exhibits green emission at 523 nm 552 nm, which correspond to 2H11/2 → 4I15/2 4S3/2 → 4I15/2 transitions Er3+, respectively. energy transfer mechanism among Er3+ ions concentration have studied. optimal doping in is found be 0.025 mol. non-radiative interaction attributed dipole–quadrupole interaction. quantum yield 7.25%, chromaticity coordinates for are (0.2571, 0.6707) close National Television System Committee standards (0.21, 0.71). lifetime erbium microsecond range. photoluminescence studies reveal that newly Er3+-doped nanocrystals would a good choice as emitter combined with previously investigated blue- red-emitting Tm3+- Sm3+-doped realizing RGB phosphor.
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