摘 要:按2（Sr0.99，Eu^2＋0.01）O-0.16B2O3-0.84P2O5配料以固相法合成藍(lán)色熒光粉。該熒光粉在還原性氣氛中，分別在1100，1150，1200℃和1250℃下進(jìn)行焙燒。對(duì)不同溫度下制成的樣品進(jìn)行X射線衍射分析，確定樣品的晶體結(jié)構(gòu)及晶相組成。通過(guò)測(cè)定樣品的激發(fā)光譜和發(fā)射光譜，研究了焙燒溫度對(duì)熒光粉結(jié)構(gòu)的影響。結(jié)果表明：在1200℃下合成的熒光粉Sr6BP5O20為單一相，屬四方晶系，P4/mmm空間群，晶胞參數(shù)分別為α=0.9794nm；c=0．9516nm，對(duì)應(yīng)發(fā)射譜中478nm的發(fā)射峰；在低于1200℃下合成的熒光粉中含有α-Sr3（PO4）2和α-Sr2P2O72個(gè)晶相，對(duì)應(yīng)發(fā)射譜中420nm的發(fā)射峰。
關(guān)鍵詞:硼磷酸鹽；藍(lán)色熒光粉；光致發(fā)光；
Abstract:Blue phosphors with the formula of 2（Sr0.99. Eu^2＋ 0.01）O-0.16B2O3-0.84P2O5 were synthesized by a solid state reaction method. Phosphors were calcined at 1 100, 1 150, 1200℃ and 1250 ℃ under a reducing atmosphere. Photoluminescence spectra of these phosphors were measured. The effects of calcining temperature on structural variations of the phosphors were investigated. According to X-ray diffraction results, the crystal assembly of the sample calcined at 1200℃ is Sr6BP5O20 with a unitary tetragonal phase in the P4/mmm space group with the cell parameters a and c as 0.979 4 nm and 0.951 6 nm, corresponding to the emission at 478 nm. In the case of phosphors synthesized at temperatures lower than 1200℃, α-Sr3（PO4）2 and α-Sr2P2O7 phases were found with the emission at 420 nm.
Key words:borophosphate; blue phosphors; fluorescence spectra
As the most promising candidate to replace conventional fluorescent lamps，light．emi Ring diodes(LEDs) have been in dem and for solid．state lighting technology in recent years．L _o Although the simulated high．color．
rendering potential of light sources consisting Of 36I)_一400 nln ultraviolet LED (Uv．LED)and tricolor phos．phors has been reported an d experimentally confirmed，Lthere are currently insufficient references on the use of phosphor converted to UV LED as illumination sources．
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