【摘要】 以（NH₄）₆Mo₇O₂₄·4H₂O、Zn（CH₃COO）₂·2H₂O、Eu（NO₃）₃·6HO₂、Li NO₃、Na NO₃、KNO₃为原料,采用高温固相法合成了Zn Mo O₄:Eu³⁺和Zn Mo O₄:Eu³⁺,M⁺（M⁺=Li⁺、Na⁺、K⁺）红色荧光粉,用X射线衍射、光致发光光谱和荧光衰减曲线,对荧光粉的结构和发光性能进行表征。研究结果表明,掺入Eu³⁺、Li⁺、Na⁺、K⁺,没有改变Zn Mo O₄三斜晶系的晶体结构。在393nm波长下激发,与单掺9%的Eu³⁺荧光粉相比,共掺6%（Li⁺、Na⁺、K⁺）的荧光粉在616nm处的发光强度,分别是单掺的1.17倍、0.79倍和-0.14倍。R值（⁵D₀→⁷F₂与⁵D₀→⁷F₁发射光的强度之比）分别为:R_Eu3+=7.18,R_Li+=8.25,R_Na+=8.36,R_K+=8.62。荧光粉的荧光寿命分别为:τ_Eu=0.6582ms,τ_Li+=0.4177ms,τ_Na+=0.3293ms,τ_K+=0.3562ms。Li⁺适合用于增强Zn Mo O₄:0.09Eu³⁺红色荧光粉的发光,Li⁺用量为8%时,其在616nm处的发光强度是单掺Eu³⁺的1.63倍。更多还原

【Abstract】 Applied（NH₄）₆Mo₇O₂₄· 4 H₂O,Zn（CH₃ COO）₂· 2 H₂O, Eu（NO₃）₃·6 H₂O, LiNO₃, NaNO₃ and KNO₃ as raw materials, ZnMoO₄:Eu³⁺ and ZnMoO₄:Eu³⁺,M+（M⁺=Li⁺,Na⁺,K⁺） were synthesized by high temperature solid-state method. The structure and luminescence properties of ZnMoO₄:Eu³⁺,M⁺（M⁺=Li⁺,Na⁺,K⁺） red phosphors were characterized by X-ray diffraction, photoluminescence spectra and fluorescence attenuation curves.The results showed that the crystal structure of the triclinic system of ZnMoO₃ doped with Eu³⁺, Li⁺, Na⁺ and K⁺ did not change.Under 393 nm excitation, the luminescence intensity of 6%（Li⁺, Na⁺, K⁺） phosphors at 616 nm was 1.17 times, 0.79 times and-0.14 times of that of 9% Eu³⁺ phosphors. The R values（the ratio of emission intensity of ⁵D₀→⁷F₂ to ⁵D₀→⁷F₁） were: R_Eu=7.18, R_Li=8.25, R_Na=8.36, R_K=8.62, respectively. The fluorescence lifetime of the phosphors were: τ_Eu=0.6582 ms, τ_Li=0.4177 ms, τ_Na=0.3293 ms, τ_K= 0.3562 ms. Li⁺was suitable for enhancing the luminescence of ZnMoO₄:0.09 Eu³⁺ red phosphor. When the dosage of Li+was 8%, the luminescence intensity at 616 nm was 1.63 times that of Eu³⁺.更多还原