Patent ID: 6380052
Filing Date: 2002-04-30
Classification: H01L

Abstract:
A method of activating P-type compound semiconductor for reducing the resistivity thereof, comprising the steps of:growing a first P-type compound semiconductor film; wherein said first P-type compound semiconductor film is made from a III-V nitride or a II-VI group compound doped with P-type impurity; heating said first P-type compound semiconductor film at a specific temperature-increasing rate, thereby rapidly increasing the ambient temperature from an initial temperature to a first specific temperature; cooling said first P-type compound semiconductor film at a specific temperature-decreasing rate, thereby rapidly decreasing the ambient temperature from said first specific temperature to a second specific temperature such that said first P-type compound semiconductor film is transformed into a second P-type compound semiconductor film; and continuously decreasing the ambient temperature from said second specific temperature to said initial temperature; wherein the time duration when the ambient temperature is greater than said second specific temperature is less than one minute during the course of temperature variation; and the resistivity of said second P-type compound semiconductor film is lower than that of said first P-type compound semiconductor film.