摘要
在弱还原气氛下制备了单价银离子（Ａｇ＋）掺杂的ＣａＯ－Ｐ２Ｏ５系统玻璃，测试了其在室温下的吸收光谱、激发光谱和发射光谱。Ａｇ＋－ＣａＯ－Ｐ２Ｏ５玻璃的吸收光谱表明两个吸收峰。高能峰位于２２０ｎｍ波长，由４ｄ１０→４ｄ９５Ｐ１跃迁引起，低能峰中心位于２４０ｎｍ波长，归因于４ｄ１０→４ｄ９５ｓ１跃迁，该吸收与其发射特性有关。紫外波段的宽带吸收产生了可见波段强烈的荧光发射，发光峰位于４４０ｎｍ波长，半宽度为１３０ｎｍ。研究了掺质浓度与发光特性的关系，随着掺质浓度的增加（０．０５～０．２５ｍｏｌ％），发光峰向较长波段移动。在Ａｇ２Ｏ含量为０．５ｍｏｌ％时，出现了浓度猝灭现象。为了比较起见，同时还研制了Ｃｕ＋－ＣａＯ－Ｐ２Ｏ５及Ｃｕ＋－Ａｇ＋－ＣａＯ－Ｐ２Ｏ５玻璃。
お? A new Ag+-CaO-P2O5 glass was prepared unde reducing condition.The absorption,excitation and emission spectra of the glasses were measured at room temperature.The absorption spectra of Ag+-CaO-P2O5 glass shows two absorption peaks,the higherenergy peak at 220nm is assigned to the 4d10→4d95p1 transition and the lowrenergy peak at 240nm is assigned to the 4d10→4d95s1 transition which is related to the emission.Excitation and emission spectra of Ag+-CaO-P2O5 glass obtained by the excitation at 287nm exhibit a maximum in the vinity of 440nm with full width at half maximum(FWHM)of 130nm.The position of the fluorescent peak shifts to longer wavelength with increasing dopant concentration(from 005 to 025mol%).The glass containing 05mol% Ag2O appears the fluorescent quenching.Cu+-CaO-P2O5 glass and Ag+-Cu+-CaO-P2O5 glass were prepared by weakly reducing condition.The luminescent characteristics of these glasses were compared with that of Ag+-CaO-P2O5 glass.
出处
《光学精密工程》
EI
CAS
CSCD
1998年第3期17-21,共5页
Optics and Precision Engineering
