Patent ID: 6861271
Filing Date: 2005-03-01
Classification: B82Y,H01L,H01S

Abstract:
1. A method for fabricating a device that emits light in blue or green wavelengths comprising: i) providing a substrate comprising a surface layer of a group III-nitride, maintaining the substrate at a temperature ranging from 700° C. to 850° C., and forming a layer of Al ii) maintaining the substrate at about the temperature of step i), and forming a layer of In iii) maintaining the substrate at about the temperature of step i), and flowing indium-precursor at a flow rate of less than 100 μmol/min between 2 and 5 seconds, and N-precursor over the layer of In iv) maintaining the substrate at about the temperature of step i), and forming a well layer of In v) maintaining the substrate around/at the temperature of step i), and forming a first cap layer of In vi) forming a second cap layer of GaN or AlGaN over the first cap layer; thereby obtaining a device that emits light in blue or green wavelengths.