文献类型：期刊文献

英文题名：Fluorescence property and structures of 2SrO-B2O3- P2O5:Eu2+ phosphor powder for UV-LED applications

作者：Yang, Yunxia[1]; Chen, Xianling[1]; Yuan, Shuanglong[1]; Zeng, Huidan[1]; Chen, Guorong[1]

机构：[1] Key Laboratory for Ultrafine Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China

年份：2006

卷号：34

期号：6

起止页码：671

外文期刊名：Kuei Suan Jen Hsueh Pao/ Journal of the Chinese Ceramic Society

收录：EI(收录号：20063510092458)

语种：英文

外文关键词：Calcination - Fluorescence - Light emitting diodes - Photoluminescence - Protective atmospheres - Structure (composition) - X ray diffraction analysis

摘要：Blue phosphors with the formula of 2 (Sr0.99, Eu2+0.01)O-0.16B2 O3-0.84P2O5 were synthesized by a solid state reaction method. Phosphors were calcined at 1100, 1150, 1200°C and 1250°C 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°C is Sr6BP5O20 with a unitary tetragonal phase in the P4/mmm space group with the cell parameters a and c as 0.9794 nm and 0.9516 nm, corresponding to the emission at 478 nm. In the case of phosphors synthesized at temperatures lower than 1200°C, α-Sr3 (PO4)2 and α-Sr2P2O4 phases were found with the emission at 420 nm.