AlF_3-YbF_3∶Er^(3+)上转换荧光粉的制备与表征  

Preparation and Characterization of Upconversion Phosphor Based on AlF_3-YbF_3∶Er^(3+)

作　　者：周禾丰[1,2] 张树全[1,2] 王华[1,2] 李洁[1,3] 王莉[1,2] 王书昊[1,2] 林文晶[1,2] 刘红利[1,2] 

机构地区：[1]太原理工大学新材料界面科学与工程教育部重点实验室,山西太原030024 [2]太原理工大学新材料工程技术研究中心,山西太原030024 [3]中北大学材料科学与工程学院,山西太原030051

出　　处：《光谱学与光谱分析》2013年第1期23-26,共4页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金项目(21071108;60976018;21101111);教育部长江学者与创新团队发展计划项目(IRT0972);山西省自然科学基金项目(2008110008;2010021023-2)资助

摘　　要：采用高温固相法制备了AlF3-YbF3∶Er3+上转换荧光粉,分析了Er3+掺杂浓度对其发光强度的影响。通过X-ray diffraction(XRD)对样品物相分析。利用荧光发射光谱研究了该荧光粉的上转换发光性能,进而提出其上转换能量传递机理,研究结果表明:在980nm半导体激光器激发下,以AlF3-YbF3为基质,当Er3+的掺杂浓度为0.7mol%时,该荧光粉的红光发射强度最强;通过上转换发光强度与泵浦电流关系曲线的拟合,表明AlF3-YbF3∶Er3+上转换荧光粉的红光上转换过程为双光子过程。In the present paper,AlF3-YbF3∶Er3＋ was prepared by high temperature solid phase reaction,and the concentration effect of Er3＋ on luminous intensity of phosphors was studied.The crystal structures of the phosphors were characterized by means of X-ray diffraction（XRD）,and the upconversion luminescence properties of phosphor were studied by fluorescence emission spectra.Upon 980 nm excitation,when the Er3＋ concentration was fixed to be 0.7 mol%,the maximum red emission intensities can be obtained in the sample.Furthermore,the research results showed that the fitted slope for red transition emission was 2.24,indicating that red emission is due to a two-photon excitation process.

关 键 词：上转换发光 ER3+ 高温固相法 

分 类 号：O482.3[理学—固体物理]