基质CBC对稀土离子Eu,Sm,Sm/Eu掺杂发光的影响  

Influence of Host CBC on the Spectrum Characteristics of Luminants Doped with Rare Earth Ions Eu, Sm, Sm/Eu

作　　者：韩丽荣[1] 常树岚[1] 

机构地区：[1]延边大学,吉林延吉133002

出　　处：《稀有金属材料与工程》2007年第7期1279-1282,共4页Rare Metal Materials and Engineering

基　　金：国家自然科学基金资助项目(20261006);吉林省科技发展计划项目(20040506-2)

摘　　要：高温固相法制备了在CaO-B2O3-CaCl2(CBC)基质中单双掺杂Eu3+,Sm3+,Sm3+/Eu3+的高光效发光材料。首次研究CBC对发光体光谱行为的影响;助熔剂对CBC:Eu2+IR光谱的影响等。结果表明:发光体与基质的激发和发射光谱存在同位发射效应。由于基质能带隙中能级和标准还原电位不同,非还原条件掺杂三价Eu3+,Sm3+得到Eu2+,Sm3+的发射。在CBC:Sm3+/Eu2+中Sm3+是Eu2+的高效敏化剂,存在激活剂与CBC的能量传递及Sm3+→Eu2+的共振能量传递。助熔剂LiCl对大部分低频区IR谱的T%有增强作用。By high temperature solid state method, the luminant materials of high light effects were prepared by single and double doping with Eu^3＋,Sm^3＋,Sm^3＋/Eu^3＋ in host CaO-B2O3-CaCl2（CBC）. The influence of host CBC on the spectrum characteristics of illuminant and the influence of flux on the IR spectrum of CBC-Eu were firstly researched. Results indicate that the emissions of excitatation and emission spectra were at the same position for the illuminants and hosts. The emission of Eu^2＋, Sm^3＋ in non-deoxidize condition was obtained due to the difference of energy level and standard deoxidize electricity potential in energy gap of host. The Sm^3＋ is the high effect sensitizer of Eu^2＋ in CBC： Sm^3＋/Eu^2＋ with the energy transfers between the activator and CBC and the Sm^3＋→Eu^2＋resonance. The LiCI flux increased the T% of most IR spectra at low frequency.

关 键 词：稀土离子 基质CaO-B2O3-CaCl2 光谱特性 IR光谱 

分 类 号：O614.33[理学—无机化学]