Journal of Luminescence ( IF 3.3 ) Pub Date : 2021-03-13 , DOI: 10.1016/j.jlumin.2021.118011 Romel M. Araujo , Emanuel Felipe dos Santos Mattos , Bento Francisco dos Santos Júnior , Marcos V. dos S. Rezende , Mário E.G. Valerio , Robert A. Jackson
Computational and experimental methodology is employed to study optical properties in Eu-doped BaAl2O4 phosphors. The symmetry and detailed geometry of the Eu-dopant site, predicted by atomistic simulation, are used to calculate the crystal field parameters and the intensity parameters (Ω2 and Ω4) based on a Judd-Ofelt approach to the Eu3+ ion. The phenomenological intensity parameters are obtained from the emission spectra of the Eu-doped BaAl2O4 and compared to the theoretical results. Experimental and calculated values for the 7F1 energy sub-levels of the Eu3+ and maximum Stark splittings (ΔEmax) are also obtained.
中文翻译:
BaAl 2 O 4荧光粉中Eu掺杂离子的光谱学研究
采用计算和实验方法研究Eu掺杂BaAl 2 O 4荧光粉的光学性质。对称性和铕掺杂剂现场的详细几何形状,通过原子模拟预测,被用于计算晶体场参数和强度参数(Ω 2和Ω 4根据贾德-Ofelt理论方法来Eu)的3+离子。从Eu掺杂BaAl 2 O 4的发射光谱获得了现象强度参数,并将其与理论结果进行了比较。Eu 3+和最大Stark分裂(ΔE)的7个F1能量子能级的实验和计算值max)也被获得。