Poly-Si Thin Film Transistors Fabricated with Rapid Thermal Annealed Silicon Films

Abstract

This letter describes a new process for realization of polysilicon thin-film transitors (TFT) on glass substrates. The process is based on crystallization by rapid thermal annealing of amorphous silicon films deposited by low-pressure chemical vapor deposition (LPCVD). With this technique, the time of crystallization of the silicon films is reduced to a few seconds. Thin-film transistors have been realized using this process, and the field-effect mobility is in the range of 20 cm 2 ·V -1 ·s -1 .