共掺Na^+(K^+)/Er^(3+)50SiO_2-30PbO-20PbF_2-0.8ErF_3玻璃陶瓷的上转换光谱性质  

Upconversion Spectroscopic Properties of Na^+(K^+)/Er Codoped 50SiO_2-30PbO-20PbF_2-0.80ErF_3 Glasses and Glass Ceramics

作　　者：邱先念[1,2] 任国仲[1,2] 林乐静[1,2] 陈敏鹏[1,2] 杨奇斌[1,2] 

机构地区：[1]湘潭大学现代物理研究所,湘潭411105 [2]湘潭大学低维材料及其应用技术教育部重点实验室,湘潭411105

出　　处：《材料研究学报》2011年第5期545-549,共5页Chinese Journal of Materials Research

摘　　要：研究掺入少量的碱金属离子Na^+、K^+后,50SiO_2-30PbO-20PbF_2-0.8ErF_3玻璃及玻璃陶瓷的热稳定性质和光谱性质。应用Judd-OfeIt理论和吸收光谱计算了Er^(3+)离子的J-0参数Ω_λ(λ=2、4、6)。上转换光谱分析表明:在520、545和650 nm处有较强的绿光和红光发射,在412 nm处有微弱的紫光发射,分别对应~2H_(11/2)→~4I_(15/2),~4S_(3/2)→~4I_(15/2),~4F_(9/2)→~4I_(15/2),~2H_(9/2)→~4I_(15/2)的跃迁。碱金属离子K^+、Na^+的加入均有利于掺Er^(3+)硅酸盐玻璃和玻璃陶瓷的上转换发光增强,添加Na^+的样品尤其明显。XRD、吸收光谱以及上转换荧光光谱结果表明,掺入Na^+离子后,在50SiO_2-30PbO-20PbF_2-0.8ErF_3-0.5NaF中有部分Er^(3+):β-PbF_2微晶。The upconversion spectroscopic properties of Na~＋（K~＋）/Er codoped 50SiO_2-30PbO- 20PbF_2-0.80ErF_3 glasses and glass ceramics were studied.Three major glasses were prepared by sintering method according to the following molar composition：50SiO_2-30PbO-20PbF_2-0.8ErF_3（EG）, 50SiO_2-30PbO-20PbF_2-0.5KO_（1/2）-0.8ErF_3（KG）,50SiO_2-30PbO-20PbF_2-0.5NaF-0.8ErF_3（NaG）.Er（3＋）：β-PbF_2 nano-crystallites grew in whole glasses,after heating treatment at the temperature 30℃higher than T_g.However,there existed small amount of Er^（3＋）：β-PbF_2 nano-crystallite in the NaG even before heating treatment.J-O parameters,Ω_2,Ω_4,Ω_6,were calculated from absorption spectrum according to J-O theory.The glass ceramics emitted more intensive red,green and blue upconersion luminescence than that of the glasses under exitation of 980 nm laser diode.

关 键 词：无机非金属材料 共掺杂 稀土掺杂玻璃陶瓷 上转换 碱金属离子 

分 类 号：O482[理学—固体物理]