Patent ID: 6455360
Filing Date: 2002-09-24
Classification: H01L,Y02E,Y02P

Abstract:
A method for forming crystalline semiconductor film on a substrate, comprising:a semiconductor film deposition process in which a semiconductor film is deposited on a substrate, a first annealing process in which said semiconductor film is repeatedly exposed to local laser irradiation, and a second annealing process in which rapid thermal annealing is performed on said laser-irradiated semiconductor film, wherein an annealing temperature in the second annealing process is expressed by the absolute temperature T and, when the annealing time is t, expressed in seconds, annealing temperature T and annealing time t satisfy the relationship: 1.72Ã—10âˆ’21 sec<tÂ·exp(âˆ’&egr;/kT) wherein &egr;=3.01 eV and k=8.617Ã—10âˆ’5 eV/K.