【摘要】 本文讨论了溴氧化镧铽荧光粉中。随着掺杂T_b³⁺离子浓度的增大。发光能级之间将产生无辐射共振转移。从而产生了T_b³⁺离子⁵D₃→F_J发光的浓度猝灭效应。根据Dexter模型,推出了多极矩耦合的无辐射迁移几率依赖于浓度的变化关系式,进一步计算了八种不同浓度的电偶极—电偶极之间和电偶极—电四极之间的无辐射迁移几率。并计算了⁵D₃→⁷F_J和⁵D₄→⁷F_J的色度坐标,它们分别为x=0.149、y=0.034和x=0.287、y=0.625。更多还原

【Abstract】 In this paper the concentration quenching effect of T_b³+ ion in L_aOB_r:T_bis discussd. The multipolar Coupling transfer probability between the 5D₃-⁵D₄ and ⁷F₆-7F₀ Pairs are calculated on the basis of the Dexter model,resulting in p_dd=1420×x⁴(S^-1, p_dg=18890×x^8/3(S^-1), where P_dd, P_dq aretransfer probability of dipole-dipole and dipole-quadripole, respectively; xis T_b³⁺ ion concentration. When T_b³⁺ ion concentration is equivalent to 0.003,the best blue colors have the chromaticity coordinats: x=0.149、y=0.034and x=0.287、y=0.625.更多还原