Patent ID: 6697403
Filing Date: 2004-02-24
Classification: H01L

Abstract:
A light-emitting device, comprising:an n-type or p-type substrate; a doped region formed on a first surface of said substrate with a predetermined dopant to be an opposite type from that of said substrate, and to have an ultra-shallow depth so that light is emitted from a p-n junction between said doped region and said substrate by a quantum confinement effect; a resonator which improves the selectivity of wavelength of the light emitted from the p-n junction; and first and second electrodes formed on the first surface and a second surface of said substrate, respectively, to inject holes and electrons, wherein the resonator includes: a first reflective layer formed on the second surface of said substrate; and a second reflective layer formed on said doped region and together with said first reflective layer improves the selectivity of the wavelength of light being emitted, one of said first and second reflective layers being formed with a lower reflectivity than the other so that the light externally emits through the first or second reflective layer having the lower reflectivity.