稀土五硼酸盐中锰（Ⅱ）的光致发光研究

INVESTIGATION ON THE PHOTOLUMINESCENT PROPERTIES OF Mn￣(2+) IN RARE EARTH PENTABORATE

通过稀土五硼酸盐ＬａＧｄＭｇＢ５Ｏ１０中掺杂离子Ｃｅ３＋、Ｍｎ２＋在紫外光激发下的发射光谱测定，发现Ｍｎ２＋离子呈现６２２ｎｍ发射峰和５９２ｎｍ发射峰。根据相应的发射峰的激发光谱，结合晶体场理论分析，前者来源于Ｍｎ２＋离子的跃迁；后者来源于Ｍｎ２＋离子的跃迁。并初步探讨了双峰结构形成的基本原因。

This paper deals with the investigation on the photoluminescent properties of Mn2+ ion in the rare earth pentaborate LaGdMgB5O10.The bipeak structure in emission spectra of Mn2+ ion is observed with an excitation wavelength of 254nm.Crystal field theory analysis shows that the broad band centered at 622nm occurs in the visible region.It is due to transition of Mn2+ ion.The other band at 592nm is probably due to thetransition.