Optical Analysis Using Effective Medium Theory and Finite Element Method to Study the Enhanced Light Absorption in Porous BaMgAl.sub.10O.sub.17:Eu.sup.2+ Phosphor

The main objective of this paper is to reveal the mechanism of enhanced excitation light absorption in nano-pores structure BaMgAl.sub.10O.sub.17:Eu.sup.2+ (BAM) phosphor by optical analysis. The optical refractive index of the BAM was calculated from the reflectance spectra by Kramers-Kronig disper...

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Bibliographic Details
Published inPhysics of the solid state Vol. 61; no. 8; pp. 1450 - 1455
Main Authors Liang, Ying-Lin, Yin, Liang-Jun, Bui, Hao-Van, Jian, Xian, Yang, Guang, Ding, Jie-Xiong
Format Journal Article
LanguageEnglish
Published Springer 01.08.2019
Subjects
Electrical engineering
Finite element method
Methods
Optical properties
Porosity
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Summary:The main objective of this paper is to reveal the mechanism of enhanced excitation light absorption in nano-pores structure BaMgAl.sub.10O.sub.17:Eu.sup.2+ (BAM) phosphor by optical analysis. The optical refractive index of the BAM was calculated from the reflectance spectra by Kramers-Kronig dispersion relation. And based on the effective medium theory, the anisotropic optical properties of porous BAM layer and its relations of absorption enhancement with porosity and thickness were investigated. A finite element simulation model was used for study the influence of pores size on optical properties. All the numerically evaluated results were match the experimental data.
ISSN:1063-7834
1090-6460
DOI:10.1134/S1063783419080286