Cu^(2+)对掺Pb^(2+)的β-BaB_2O_4纳米材料发光特性的影响  

Effect of Cu^(2+) on Photoluminescence Characteristics of Pb^(2+)-doped β-BaB_2O_4 Nanoparticles

作　　者：邹文国[1] 杨忠森[1] 吕孟凯[1] 顾锋[1] 王淑芬[1] 

机构地区：[1]山东大学晶体材料国家重点实验室

出　　处：《材料工程》2005年第9期19-21,共3页Journal of Materials Engineering

摘　　要：采用共沉淀法合成了掺杂Cu2+,Pb2+的-βBaB2O4纳米材料,通过激发光谱和发射光谱研究了其发光性质,并探讨了Cu2+对Pb2+发光性能的影响。在-βBaB2O4:Pb2+的发射光谱中观察到位于630nm的强而稳定的发射峰。由于Cu2+和Pb2+在-βBaB2O4中形成复合发光中心,Cu2+和Pb2+共掺样品的发射光谱与Pb2+单独样品的发射光谱有很大的不同,Pb2+在-βBaB2O4:Cu2+,Pb2+中的发光强度显著增强。Pb^2＋-doped and Cu^2＋, Pb^2＋ co-doped beta barium borate （β-BaB2O4） nanoparticles were prepared by co-precipitation method. The photoluminescence spectra of the doped samples were investigated. A relatively strong and stable visible-light emission band of Pb^2＋-doped β-BaB2O4 sample centered at about 630nm was observed originating from the Pb^2＋-related charge-transfer transition. Because of the role of the composite center of Cu^2＋ and Pb^2＋ , the photoluminescence spectra of the codoped sample are dramatically different from that of the Pb^2＋-doped sample and the luminescence intensities of the β-BaB2O4 ： Pb^2＋ have been greatly enhanced.

关 键 词：β-BaB2O4纳米材料 发光 Pb^2+和Cu^2+ 

分 类 号：TB383[一般工业技术—材料科学与工程]