Two-Part Gauss Simulation of Phosphor-Coated LED

Gauss simulation is an effective tool for designing light-emitting-diode (LED) light sources. This paper proposes a new two-part Gauss simulation model to simulate a YAG:Ce phosphor-coated LED (PC-LED). This model divides the emission spectra of YAG:Ce phosphor into two parts, and they use different...

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Bibliographic Details
Published in:IEEE photonics journal 2013-08, Vol.5 (4), p.1600110-1600110
Main Authors: Jin, H., Jin, S., Yuan, K., Cen, S.
Format: Article
Language:English
Subjects:
Adaptive optics
Color
Light emitting diodes
luminescence and fluorescence
Mathematical model
Measurement uncertainty
optical and other properties
Phosphors
theory and design
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Summary:Gauss simulation is an effective tool for designing light-emitting-diode (LED) light sources. This paper proposes a new two-part Gauss simulation model to simulate a YAG:Ce phosphor-coated LED (PC-LED). This model divides the emission spectra of YAG:Ce phosphor into two parts, and they use different half spectral widths in the Gauss function to accurately simulate the spectra of YAG:Ce PC-LED. The simulated spectra are similar to the measured spectra of packaged LEDs; most correlated color temperature (CCT) error is less than 4%, color rendering index (CRI) error is less than 2, and luminous efficacy of radiation (LER) error is less than 3% for simulation results. This is a vast improvement on an ordinary single Gauss simulation model. Using the model to analyze the combination of common blue LED and YAG:Ce phosphor helps the design of new white LEDs.
ISSN:1943-0655
1943-0647
DOI:10.1109/JPHOT.2013.2272783