Patent ID: 7230281
Filing Date: 2007-06-12
Classification: H01L

Abstract:
1. A semiconductor light emitting device, comprising: a semiconductor substrate; a semiconductor layer comprising an n-type cladding layer, an active layer, a p-type cladding layer and a p-type contact layer, wherein the p-type contact layer comprises an As-based material and is located at the top of the semiconductor layer and doped with a p-type dopant comprising zinc at a concentration of 1×10 a current spreading layer formed on the semiconductor layer and comprising a metal oxide material; and a diffusion prevention layer formed between the p-type contact layer and the p-type cladding layer, wherein the diffusion prevention layer comprises a group III–V semiconductor that comprises phosphorus as a group V element and has a crystal lattice mismatch ratio of within ±0.3% to the semiconductor substrate.