Localized surface plasmon resonance for enhanced photoluminescence of lumiphoric materials

A light-emitting device comprising:

• a light-emitting diode (LED) chip;
• and
• a wavelength conversion element that is arranged on the LED chip, wherein the wavelength conversion element comprises:
• a support element;
• a plasmonic material on the support element, wherein the plasmonic material is arranged to receive light emitted by the LED chip and induce a localized surface plasmon enhanced electric field, and the plasmonic material is arranged with a decreased concentration in an area that is registered with a central portion of the LED chip as compared with other areas that are registered at or near peripheral portions of the LED chip;
• 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.

A light-emitting device comprising:

• a light-emitting diode (LED) chip;
• a plasmonic material comprising a plurality of nanoparticles that are coated with a dielectric material, the plasmonic material being arranged to receive light emitted by the LED chip and induce a localized surface plasmon enhanced electric field;
• and
• a lumiphoric material comprising a ceramic phosphor plate arranged to receive light emitted by the LED chip, the plasmonic material being arranged within the ceramic phosphor plate so that the lumiphoric material is at least partially within the localized surface plasmon enhanced electric field.

A light-emitting device comprising:

• a light-emitting diode (LED) chip;
• a plasmonic material arranged to receive light emitted by the LED chip and induce a localized surface plasmon enhanced electric field;
• a lumiphoric material comprising a single crystal phosphor arranged to receive light emitted by the LED chip, the lumiphoric material being arranged at least partially within the localized surface plasmon enhanced electric field;
• and
• a layer of dielectric material arranged to separate the plasmonic material from the single crystal phosphor.