Patent ID: 6475825
Filing Date: 2002-11-05
Classification: C23C,C30B,H01L,Y02E,Y10S,Y10T

Abstract:
A process for growing an arsenic doped ZnO film on a GaAs substrate in a pulsed laser deposition chamber, the process comprising:cleaning the GaAs substrate; adjusting the temperature in the pulsed laser deposition chamber to between about 300Â° C. to about 450Â° C.; pre-ablating a polycrystalline ZnO crystal; directing an excimer pulsed laser beam onto the polycrystalline ZnO crystal to grow a ZnO film on the GaAs substrate; increasing the temperature of the pulsed laser deposition chamber to between about 450Â° C. and about 600Â° C.; and annealing the ZnO coated GaAs substrate to diffuse at least about 1Ã—1018 acceptors/cm3 from the GaAs into the ZnO film to produce the arsenic doped ZnO film.