Patent ID: 9449817
Filing Date: 2016-09-20
CPC Classification: H01L

Claim Text:
1. A method of manufacturing a semiconductor device, the method comprising: forming a silicon-based substrate having a doping concentration in a range of between about 5×10 forming a first buffer layer formed of Aluminum-Nitride (AlN) as a nucleation layer on the silicon-based substrate; forming a second buffer layer formed of Aluminum-Gallium-Nitride (AlGaN) on the first buffer layer; forming a nitride stack on the second buffer layer; forming a device layer on the nitride stack; depositing a dielectric layer on the device layer; patterning the dielectric layer to form at least a chip passivation layer (PL) and a current blocking layer (CBL) on the device layer; and removing the silicon-based substrate.