Re-Absorption Effect Modeling for Dual-Layer Phosphor Package of White LEDs

This paper successfully establishes an optical model with dual green/red phosphor layers based on the original single-phosphor model. Since the re-absorption effect of double-layer phosphors causes spectral distortion, the model must introduce a correction mechanism for spectral re-absorption. Throu...

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Bibliographic Details
Published inIEEE photonics journal Vol. 13; no. 4; pp. 1 - 10
Main Authors Sun, Ching-Cherng, Peng, Yi-Ning, Chang, Yu-Yu, Chen, He-Xiang, Lee, Tsung-Xian
Format Journal Article
LanguageEnglish
Published Piscataway IEEE 01.08.2021
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Absorption
Color
Color temperature
Light emitting diodes
Mie scattering
Optical scattering
package
Packaging
phosphor
Phosphors
Ray tracing
re-absorption
White LEDs
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Summary:This paper successfully establishes an optical model with dual green/red phosphor layers based on the original single-phosphor model. Since the re-absorption effect of double-layer phosphors causes spectral distortion, the model must introduce a correction mechanism for spectral re-absorption. Through the LED packaging experiment, simulation, and verification of the double-layer phosphors, we can effectively predict the ratios required for the two phosphors under different color temperatures and confirm this model's high precision and accuracy. In the future, this model can be used to analyze further the optical performance of white LEDs with different dual-layer phosphor packaging types.
ISSN:1943-0655
1943-0655
1943-0647
DOI:10.1109/JPHOT.2021.3097340