CAJ | 학술논문

采用高温固相法在900℃、保温3 h的条件下制备了Ca1-xMoO4∶Eu3+x（0.03≤x≤0.11）和Ca0.93（Mo1-xWx）O4∶Eu3+0.07（0≤x≤0.4）系列样品，通过XRD、SEM及荧光光谱仪对粉体的晶体结构、形貌及荧光性能进行测试和表征。结果表明，Eu3+和WO42-的掺杂没有改变CaMoO4原有的四方晶系体心结构，但样品粒径分布不太均匀，伴有轻微团聚现象。CaMoO4基质中，存在Eu3+的浓度猝灭现象，且最优掺杂量的摩尔浓度为7%，样品的激发光谱涵盖200~550 nm的宽带激发。分别在395 nm和466 nm激发下，较之Ca0.93MoO4∶Eu3+0.07，WO42-的掺杂可以提高样品的发光强度，当n（Mo/W）=9/1时，Ca0.93（Mo0.9W0.1）O4∶Eu3+0.07样品的发光强度达到最大，分别提高到了143%和131%，且样品的色纯度与商业粉相当，适合于近紫外及蓝光LED用红色荧光粉，显示出良好的市场应用价值。
채용고온고상법재900℃、보온3 h적조건하제비료Ca1-xMoO4∶Eu3+x（0.03≤x≤0.11）화Ca0.93（Mo1-xWx）O4∶Eu3+0.07（0≤x≤0.4）계렬양품，통과XRD、SEM급형광광보의대분체적정체결구、형모급형광성능진행측시화표정。결과표명，Eu3+화WO42-적참잡몰유개변CaMoO4원유적사방정계체심결구，단양품립경분포불태균균，반유경미단취현상。CaMoO4기질중，존재Eu3+적농도졸멸현상，차최우참잡량적마이농도위7%，양품적격발광보함개200~550 nm적관대격발。분별재395 nm화466 nm격발하，교지Ca0.93MoO4∶Eu3+0.07，WO42-적참잡가이제고양품적발광강도，당n（Mo/W）=9/1시，Ca0.93（Mo0.9W0.1）O4∶Eu3+0.07양품적발광강도체도최대，분별제고도료143%화131%，차양품적색순도여상업분상당，괄합우근자외급람광LED용홍색형광분，현시출량호적시장응용개치。
Ca1-xMoO4∶Eu3+x(0.03≤x≤0.11) and Ca0.93(Mo1-xWx)O4∶Eu3+0.07(0≤x≤0.4) phosphors were synthesized by solid state reaction at 900 ℃ for 3 h. The structure, morphology and luminescence spectra of samples were investigated are by XRD, SEM and fluorescence spectrophotometer, respectively. The results show the samples doped with Eu3+and WO42-maintain the body-centered tetragonal structure of CaMoO4 while the particles show non-uniform distribution with slight aggregation. The CaMoO4 shows concentration quenching of Eu3+, the optimum Eu3+doping concentration is 7 mol%. The excitation spectrum of samples covers broad band of 200~550 nm. The emission intensity of samples doped of with WO42-was higher than that of Ca0.93MoO4∶Eu3+0.07 and the emission intensity of Ca0.93 (Mo1-xWx)O4∶Eu3+0.07 reach the maximum when the n(Mo/W)=9/1, up to 143%and 131%, excited by 395 nm and 466 nm, respectively, and the Color purity is the same as the merchandise powder, which is suitable for the UV-pumped white LED as red phosphor.