Color-tunable transmission mode active phosphor based on iii-nitride nanowire grown on transparent substrate

Boon S. Ooi (Inventor), Aditya Prabaswara (Inventor), Bilal Janjua (Inventor), Tien Khee Ng (Inventor)

Research output: Patent

Abstract

A system and method providing correlated color temperature-tunable (CCT- tunable) white light using a laser diode(s) in conjunction with a III-Nitride nanowires- based LED element grown on a semi-transparent substrate. The tunability spans across yellow, amber, and red wavelengths and can be implemented by current injection. The current-dependent broad wavelength tunability enables control of wide range of CCT values (intensity, peak wavelength, and spectral coverage). The broad coverage in the yellow-amber-red color regime mimics that of a passive yellow phosphor, while the injection of current into the LED element defines an active phosphor element. The semi- transparent active phosphor element allows direct transmission of light from a laser diode(s) for achieving extreme wide tunability of CCT.
Original languageEnglish (US)
Patent numberWO2018122774A1
StatePublished - Jul 5 2018

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