Resonant optical cavity light emitting device
US10622514B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 15, 2018 |
| Grant date | Apr 14, 2020 |
| Priority date | — |
| Expiry date | Oct 15, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/0363
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Resonant optical cavity light emitting devices are disclosed, where the device includes an opaque substrate, a first spacer region, a first reflective layer, a light emitting region, a second spacer region, and a second reflective layer. The light emitting region is configured to emit a target emission deep ultraviolet wavelength, and is positioned at a separation distance from the reflector. The second reflective layer may have a metal composition comprising elemental aluminum and a thickness less than 15 nm. The device has an optical cavity comprising the first spacer region, the second spacer region and the light emitting region, where the optical cavity has a total thickness less than or equal to K·λ/n. K is a constant ranging from 0.25 to 10, λ is the target wavelength, and n is an effective refractive index of the optical cavity at the target wavelength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.