US 12,007,326 B2
Localized surface plasmon resonance for enhanced photoluminescence of lumiphoric materials
Michael Check, Holly Springs, NC (US); David Suich, Durham, NC (US); and Steven Wuester, Wake Forest, NC (US)
Assigned to CreeLED, Inc., Durham, NC (US)
Filed by CreeLED, Inc., Durham, NC (US)
Filed on Sep. 10, 2021, as Appl. No. 17/471,951.
Prior Publication US 2023/0083154 A1, Mar. 16, 2023
Int. Cl. G01N 21/552 (2014.01); B82Y 30/00 (2011.01); H01L 33/50 (2010.01); H01L 33/56 (2010.01)
CPC G01N 21/554 (2013.01) [H01L 33/502 (2013.01); H01L 33/56 (2013.01); B82Y 30/00 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A light-emitting device comprising:
a light-emitting diode (LED) chip;
a plasmonic material on the LED chip, wherein the plasmonic material is arranged to receive light emitted by the LED chip and induce a localized surface plasmon enhanced electric field; and
a lumiphoric material arranged to receive light emitted by the LED chip, wherein the lumiphoric material is arranged at least partially within the localized surface plasmon enhanced electric field;
wherein the plasmonic material is arranged with decreased concentrations in areas that are registered with central portions of the LED chip as compared with other areas that are registered at or near peripheral portions of the LED chip.