Invention Grant
- Patent Title: LED emitters with integrated nano-photonic structures to enhance EQE
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Application No.: US16160738Application Date: 2018-10-15
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Publication No.: US11024775B2Publication Date: 2021-06-01
- Inventor: Venkata Ananth Tamma , Toni Lopez
- Applicant: Lumileds LLC
- Applicant Address: US CA San Jose
- Assignee: Lumileds LLC
- Current Assignee: Lumileds LLC
- Current Assignee Address: US CA San Jose
- Priority: EP18158917 20180227
- Main IPC: H01L33/46
- IPC: H01L33/46 ; H01L33/06 ; H01L33/10 ; H01L33/20 ; H01L33/60

Abstract:
A device, system and method for producing enhanced external quantum efficiency (EQE) LED emission are disclosed. The device, system and method include a patterned layer configured to transform surface modes into directional radiation, a semiconductor layer formed as a III/V direct bandgap semiconductor to produce radiation, and a metal back reflector layer configured to reflect incident radiation. The patterned layer may be one-dimensional, two-dimensional or three-dimensional. The patterned layer may be submerged within the semiconductor layer or within the dielectric layer. The semiconductor layer is p-type gallium nitride (GaN). The patterned layer may be a hyperbolic metamaterials (HMM) layer and may include Photonic Hypercrystal (PhHc), or may be a low or high refractive index material or may be a metal.
Public/Granted literature
- US20190115492A1 LED EMITTERS WITH INTEGRATED NANO-PHOTONIC STRUCTURES TO ENHANCE EQE Public/Granted day:2019-04-18
Information query
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