Kim H, Kim J, Lim S, Park K
J Nanosci Nanotechnol. 2016 Feb;16(2):1827-30. doi: 10.1166/jnn.2016.11969.
In this study, a series of nano-sized Ca2NaMg(2-x)V3O12:xEu3+ (0.06 < or = x < or = 0.18) red phosphors is synthesized by solution combustion method. The microstructure and photoluminescence properties of the Ca2NaMg(2-x)V3O12:xEu3+ phosphors are studied in accordance with the Eu3+ content. Annealed Ca2NaMg(2-x)V3O12:xEu3+ phosphors form a single phase with the cubic garnet structure and Ia3d space group. The emission from (VO4)3- in the Ca2NaMg(2-x)V3O12:xEu3+ phosphors is almost completely quenched due to the efficient energy transfer from the (VO4)3- to the Eu3+ ions. The emission intensity increases sharply with the increased Eu3+ content, reaching a maximum value at x = 0.15, and then decreases with further Eu3+ content. Ca2NaMg1.85V3O12:0.15Eu3+ shows great potential as a red phosphor for white light-emitting diodes.
在本研究中，通过溶液燃烧法合成了一系列纳米尺寸的Ca2NaMg(2-x)V3O12:xEu3+（0.06≤x≤0.18）红色荧光粉。根据Eu3+含量研究了Ca2NaMg(2-x)V3O12:xEu3+荧光粉的微观结构和光致发光性能。退火后的Ca2NaMg(2-x)V3O12:xEu3+荧光粉形成具有立方石榴石结构和Ia3d空间群的单相。由于从(VO4)3-到Eu3+离子的有效能量转移，Ca2NaMg(2-x)V3O12:xEu3+荧光粉中(VO4)3-的发射几乎完全猝灭。发射强度随着Eu3+含量的增加而急剧增加，在x = 0.15时达到最大值，然后随着Eu3+含量的进一步增加而降低。Ca2NaMg1.85V3O12:0.15Eu3+作为白光发光二极管的红色荧光粉具有很大的潜力。
