26 November 2002 Green phosphor-converted LED
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Abstract
Green phosphor-converted LEDs using a blue pump InGaN diodes have advantages over the direct green InGaN LED with regards to color stability with drive and/or temperature. Added manufacturing steps are outweighed by higher color yield, as a range of pump colors can be used without changing the final chromaticity. The conversion losses can be smaller than the decrease in wall-plug efficiency from blue towards green, which has been reported by many sources. A distinct disadvantage of the concept is due to only one color and phosphor proven - SrGa2S4:Eu2+ and 535 nm peak wavelength.
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Regina Mueller-Mach, Regina Mueller-Mach, Gerd O. Mueller, Gerd O. Mueller, Troy A. Trottier, Troy A. Trottier, Michael R. Krames, Michael R. Krames, A. Kim, A. Kim, Dan A. Steigerwald, Dan A. Steigerwald, } "Green phosphor-converted LED", Proc. SPIE 4776, Solid State Lighting II, (26 November 2002); doi: 10.1117/12.456557; https://doi.org/10.1117/12.456557
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