SrAl₂B₂O 荧光粉中 Eu 掺杂的位点占据和性质的键能方法

The Bond-Energy Method in Site Occupancy and Property of Eu Doped in SrAl₂B₂O Phosphors.

作者信息

Pan Yu, Wang Wen Jun, Zhu Yu Han, Li Ling, Liu Xiao Guang, Noh Hyeon Mi, Jeong Jung Hyun

机构信息

Hubei Collaborative Innovation Center for Advanced Organochemical Materials, Ministry-of-Education Key Laboratory for the Synthesis and Applications of Organic Functional Molecules, Hubei University, Wuhan, Hubei, 430062, China.

Department of Physics, Pukyong National University, Busan 608-737, Korea.

出版信息

J Nanosci Nanotechnol. 2019 Feb 1;19(2):1130-1132. doi: 10.1166/jnn.2019.15933.

DOI:10.1166/jnn.2019.15933

PMID:30360216

Abstract

The SrAl₂B₂O:1%Eu phosphors were obtained by solid-state reaction. Photoluminescence (PL) spectra are characterized the property of samples, and under the excitation of 394 nm, the sharp emission lines of SrAl₂B₂O:1%Eu can be assigned to Judd-Ofelt transitions (D-F) of Eu, which are D-F, D-F₂, D-F₃, and D-F₄. The bond energy method is used to determine the site occupancy, and the occupancy of Eu can be determined by comparing the deviation of its bond energy in different locations at Sr, Al and B sites. Theoretical calculation result indicates that Eu would preferentially occupy the smaller energy variation sites Sr.

摘要

通过固相反应获得了SrAl₂B₂O:1%Eu荧光粉。光致发光（PL）光谱表征了样品的性质，在394nm激发下，SrAl₂B₂O:1%Eu的尖锐发射线可归因于Eu的Judd-Ofelt跃迁（D-F），即D-F₁、D-F₂、D-F₃和D-F₄。采用键能法确定占位情况，通过比较Eu在Sr、Al和B位点不同位置的键能偏差来确定Eu的占位。理论计算结果表明，Eu优先占据能量变化较小的Sr位点。