CAJ | 학술논문

柠檬酸辅助水热合成并在600℃条件下煅烧2小时制备出了红色荧光粉 NaLa （MoO4）2：Eu3＋，并采用X射线衍射（XRD）、场发射扫描电镜（FE‐SEM ）和荧光光谱（PL）等对样品进行了表征。结果表明：产物为纯四方相结构；随着E u3＋形成固溶体的浓度增加，发光强度逐渐增强，电荷迁移带宽化并红移；当Eu3＋形成固溶体的浓度为50％时，产物发光强度最大；所制备样品能够被紫外光（280 nm）、近紫外光（395 nm）和蓝光（465 nm）有效激发，其主发射峰均位于617 nm处Eu3＋的5 D0→7 F2特征跃迁；所得产物色坐标稳定且与N T SC红色色坐标非常接近。因此，该方法制备的NaLa（MoO4）2：Eu3＋荧光粉是一种性能稳定、可被广泛应用的红色发光材料。
저몽산보조수열합성병재600℃조건하단소2소시제비출료홍색형광분 NaLa （MoO4）2：Eu3＋，병채용X사선연사（XRD）、장발사소묘전경（FE‐SEM ）화형광광보（PL）등대양품진행료표정。결과표명：산물위순사방상결구；수착E u3＋형성고용체적농도증가，발광강도축점증강，전하천이대관화병홍이；당Eu3＋형성고용체적농도위50％시，산물발광강도최대；소제비양품능구피자외광（280 nm）、근자외광（395 nm）화람광（465 nm）유효격발，기주발사봉균위우617 nm처Eu3＋적5 D0→7 F2특정약천；소득산물색좌표은정차여N T SC홍색색좌표비상접근。인차，해방법제비적NaLa（MoO4）2：Eu3＋형광분시일충성능은정、가피엄범응용적홍색발광재료。
Eu3+‐doped NaLa (MoO4 )2 red phosphors were prepared via a citric acid‐assisted hydrothermal process and the samples were annealed at 600 ℃ for two hours .The asprepared products were characterized by X‐ray diffraction (XRD) ,field emission‐scanning electron mi‐croscopy (FE‐SEM ) and photoluminescence (PL ) ,respectively .The results demonstrated that the obtained NaLa(MoO4 )2 :Eu3+ phosphors are pure tetragonal phase of which the e‐mission intensity enhanced with the increasing of Eu3+ doping concentration .Moreover ,the charge transfer band shift to the red with broadening of its peak ,and the optimum Eu3+ do‐ping concentration for obtaining maximum emission intensity was confirmed to be 50% .In addition ,the phosphor can be effectively excited by 280 nm ,395 nm and 465 nm .All com‐pounds exhibit strong luminescence emissions of 5 D0 → 7 F2 transition at 617 nm .Chromaticity coordinates of NaLa(MoO4 )2 :Eu3+ are stable and fit well with the standard red color coordi‐nate .The results indicate that NaLa(MoO4 )2 :Eu3+ is a wide used red‐emitting phosphors with good stability .