Ce3+-Nd3+共掺Y3Al5O12发光材料的合成及其近红外量子剪裁特性研究

摘要：

以高温固相法合成一系列Ce^3+-Nd^3+共掺Y3Al5O12(YAG)发光材料.通过荧光光谱测试证明,在YAG基质中Ce^3+-Nd^3+之间发生宽谱高效近红外量子剪裁,能量传递机理为合作能量下转换.在460nm波长激发下,Ce^3+离子吸收一个可见光子跃迁至5d1能级,然后将自身能量传递给两个邻近的Nd^3+,进而发射出两个近红外光子.对样品的荧光衰减曲线分析可知,Ce^3+-Nd^3+之间的量子效率高达177.8%.通过Ce^3+-Nd^3+之间的量子剪裁,可将太阳光谱中能量较高的紫外-可见波段转换为近红外波段,有利于太阳光谱更好地被晶硅太阳能电池吸收和利用.

Ce^3+-Nd^3+codoped Y3Al5O12(YAG)phosphors were synthesized by a high temperature solid state method.Broadband near infrared quantum cutting was achieved and proved to be a cooperative down-conversion process.Under 460 nm excitation,Ce^3+absorbed visible photons to occur electronic transitions to 5d 1 and then and transferred their energy to two neighboring Nd 3+.Subsequently,two NIR photons were emitted by Nd^3+.The down-conversion quantum efficiency were estimated to be as high as 177.8%.This work will open a new route towards increased efficiency in silicon solar cells.According to the quantum cutting between Ce^3+-Nd^3+,the UV-Vis broadband wavelength in the solar spectrum can be converted into NIR waveband,and then absorbed efficiently by the crystalline solar cells.

作者：

袁光辉 台玉萍 张永光

Yuan Guanghui;Tai Yuping;Zhang Yongguang(Department of Chemistry and Chemical Engineering,Research Center of New Advanced Materials,Ankang University,Ankang 725000,China;School of Chemical Engineering & Pharmacy,Henan University of Science and Technology,Luoyang 471023,China;Research Institute for Energy Equipment Materials,Hebei University of Technology,Tianjin 300130,China)

机构地区：

安康学院化学化工学院 河南科技大学化工与制药学院 河北工业大学能源装备材料技术研究院

出处：

《betway官方app 学报：自然科学版》 CAS 北大核心 2019年第5期85-90,共6页

基金：

国家自然科学基金(21406052) 陕西省科技厅面上项目(2019JM-229) 河南省高等学校科研项目(18B150005) 安康市科技局工业攻关项目(2018AK01-12) 安康学院学科交叉融合项目(2017AYJC01) 安康学院高层次人才启动项目(2016AYQDZR05)

关键词：

量子剪裁 Ce^3+-Nd^3+共掺 合作能量下转换 晶硅太阳能电池

quantum cutting Ce^3+-Nd^3+codoped cooperative energy transfer crystalline solar cell

分类号：

O69 [理学—化学]

Ce3+-Nd3+共掺Y3Al5O12发光材料的合成及其近红外量子剪裁特性研究.pdf