Patent ID: 8470697
Filing Date: 2013-06-25
Classification: H01L

Abstract:
1. A method of forming a p-type compound semiconductor layer, the method comprising the steps of: heating a substrate in a reaction chamber to a first temperature; supplying a source gas of a Group III element, a source gas of a p-type impurity, and source gas of nitrogen containing hydrogen into the reaction chamber to grow the p-type compound semiconductor layer; after the growth of the p-type compound semiconductor layer is completed, stopping the supply of the source gas of the Group III element and the source gas of the p-type impurity, and lowering the temperature of the substrate to a second temperature, while maintaining the supply of the source gas of nitrogen containing hydrogen; after lowering the temperature of the substrate to the second temperature, stopping the supply of the source gas of nitrogen containing hydrogen at the second temperature while the p-type compound semiconductor layer is exposed; exhausting the source gas of nitrogen containing hydrogen remaining in the reaction chamber; and lowering the temperature of the substrate to a room temperature.