磷酸盐玻璃中Mn^（2＋）离子的发光研究  

STUDY OF Mn￣(2+) LUMINESCENCE IN PHOSPHATE GLASS SERIES

作　　者：王民权[1] 马立新[1] 樊先平[1] 

机构地区：[1]浙江大学材料科学与工程系

出　　处：《硅酸盐学报》1995年第1期61-67,共7页Journal of The Chinese Ceramic Society

摘　　要：应用荧光光诸、振动光谱和电子自旋共振波潜等系统地研究了掺Ｍｎ￣（２＋）离子的锌磷酸盐和铝酸盐系统玻璃的发光行为。结果表明：三元磷酸盐玻璃中Ｍｎ￣（２＋）用紫外激发，于可见区产生一宽发射带；变换玻璃中的网络外体离子，玻璃网络化学键主振动峰不变。随碱金属或碱土金属离子场强减小，Ｍｎ￣（２＋）离子的￣４Ｔ＿１（Ｇ）→￣６Ａ＿１（Ｓ）发光跃迁的相对强度规律变小，且向长波方向移动，反之亦然。Ｍｎ￣（２＋）在磷酸盐玻璃中为６配位，发红光，强度大。用声子弛豫无辐射跃迁解释了Ｍｎ￣２＋）离子的￣４Ｔ＿１（Ｇ）→￣６Ａ＿１（Ｓ）单一荧光发射，讨论了网络外体离子诱导的Ｍｎ￣（２＋）配位场变化以及碱金属、碱土金属离于对Ｍｎ￣（２＋）发光的影响规律。为选择与优化工艺和性能提供了依据。Luminescent characteristics of zinc-phosphate glass and alumino-phosphate glass doped with Mn￣(2+) are systematically studied by means of fluorescence spectra,IR and ESR spectra. The results indicate that the e-mission spectra excited in the UV range are situated in the visible region and have a broad band width,and the main peak in the vibration of chemical bonds in the glass network can hardly be changed by exchanging the net-work modified ion. The relative intensity of Mn￣(2+) emission transition,￣4T_1(G)→￣6A_1(S),regularly decreases and the broad emission peak shifts to the longer wavelength as the field strength of alkali and alkali earth metal ions gradually decreases. The single emission transition,￣4T_1(G)→￣6A_1(S),from higher excited level(such as ￣4A_1,￣4E(G)etc. )to the ￣4T_1(G)level,is explained in views of multiphono relaxation and the variation of the local lig-and field of Mn￣(2+) ions induced by the modifier ions is discussed.Further,the influence of alkali and alkali earth metal ions on the Mn￣(2+) luminescent behavior is analysed.

关 键 词：磷酸盐 玻璃 锰离子 荧光光谱 

分 类 号：TQ171.717[化学工程—玻璃工业]