A novel Li2Al2B2O7:Dy3+ white light emitting phosphor synthesized by stearic sol-gel method

作者：Manwar Y P; Palaspagar R S; Sonekar R P; Omanwar S K

来源：Journal of Materials Science: Materials in Electronics , 2017, 28(1): 994-998.

DOI：10.1007/s10854-016-5619-6

Li2(1-x)Al2B2O7:Dy-x(3+) (x = 0.01, 0.03, 0.05, 0.07 and 0.09 mol) phosphors were prepared by steric sol-gel method. The crystalline nature of the synthesized material was confirmed by using powder X-ray diffraction. The surface morphology and elemental composition analysis has been carried out for Dy3+ doped Li2Al2B2O7 phosphor by using transmission electron microscopy, field emission scanning electron microscopy, and energy dispersive X-ray spectroscopy techniques. PL measurements indicated that the phosphor exhibited two strong emission transitions such as F-4(9/2) -> H-6(15/2) (blue) and F-4(9/2) -> H-6(13/2) (yellow) observed in visible region. The concentration quenching is observed at 5 mol% of Dy3+ ions doped Li2Al2B2O7 phosphor. The CIE chromaticity coordinates were evaluated for two sharp emissions observed in blue (F-4(9/2) -> H-6(15/2)) and yellow (F-4(9/2) -> H-6(13/2)) regions to understand the suitability of these materials for white light generation.

• 出版日期2017-1