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High-power phosphor-converted light-emitting diodes based on III-Nitrides

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4 Author(s)
Mueller-Mach, Regina ; Adv. Labs., Lumileds Lighting, San Jose, CA, USA ; Mueller, Gerd O. ; Krames, M.R. ; Trottier, T.

Phosphor conversion of light-emitting diode light for white light sources and some monochrome applications requires particular phosphor properties and has to take into account specific issues if aimed at high-power output. Limitations and solutions will be discussed, giving special considerations to drive and temperature dependencies. Efficiencies of 32 lm/W for white with good color rendering at 4600 K and 35 lm/W for green (535 nm) have been demonstrated

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Selected Topics in Quantum Electronics, IEEE Journal of  (Volume:8 ,  Issue: 2 )