Eu^（2＋）：Sr_9Ca（PO_4）_6Cl_2中的新型色心及其光激励发光  

New Color Centers and Photostimulated Luminescence of Eu￣(2+): Sr_9Ca(PO_4 )_6Cl_2

作　　者：陈伟[1,2] 宋家庆[1,2] 赵纬 苏勉曾[1,2] 马如璋 

机构地区：[1]北京科技大学材料物理系 [2]北京大学化学系

出　　处：《光学学报》1994年第2期159-163,共5页Acta Optica Sinica

基　　金：国家自然科学基金

摘　　要：本文报道了Ｅｕ２＋：Ｓｒ９Ｃａ（ＰＯ４）６Ｃｌ２的新型色心．它的吸收带主峰分别位于７０８，７８５，８４５及９９０ｎｍ．用对应于Ｆ心吸收带和这些吸收带波长的光束分别激励样品时得到相同的光激励发光．通过对比研究表明，这些吸收带是由Ｆ心的缔合中心，即由ＦＡ心产生的．由于这些色心的吸收带偏离Ｅｕ２＋的发射波长（４５０ｎｍ）更远，故更适应于Ｅｕ２＋：Ｓｒ９Ｃａ（ＰＯ４）６Ｃｌ２光波励发光的研究和开发．ew color centers in Eu2+: Sr9Ca(PO4)6Cl2 are reported in this paper, theirabsorption bands are Peaking at 708, 785, 845 and 990 nm respectively. Thephotootimulated luminescence by stimulation into those bands are the same as that bystimulation into F bands. Through comparison with the centers in other crystals, we mayassign those new bands to F aggregates, i. e. FA centers. The shift between thestimulation bands of FA centers and emission band of Eu2+ is greater than that between Fbands and emission band of Eu2+, so the FA centers are more efficient for the applicationof this PSL Phosphor.

关 键 词：光激励发光 色心 发光材料 铕离子 

分 类 号：O482.31[理学—固体物理]