Patent ID: 8980664
Filing Date: 2015-03-17
Classification: H01L

Abstract:
1. A method for fabricating a stacked nitride-compound semiconductor structure, comprising: forming a first protection film on a second surface of a substrate, the substrate having a first thermal expansion coefficient, the second surface being opposed to a first surface of the substrate; forming a first nitride-compound semiconductor layer on the first surface of the substrate, the first nitride-compound semiconductor layer having a second thermal expansion coefficient which is different from the first thermal expansion coefficient; forming a second protection film on the first nitride-compound semiconductor layer, the second protection film and first protection film being a same material; covering a surface and side surfaces of the second protection film with a third protection film, then using a chemical solution to remove the first protection film to expose the second surface of the substrate; forming a second nitride-compound semiconductor layer on the second surface of the substrate exposed by removing the first protection film, the second nitride-compound semiconductor layer having a third thermal expansion coefficient which is approximately equal to the second thermal expansion coefficient; and removing the second protection film to expose the first nitride-compound semiconductor layer.