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- W1620009642 abstract "The electrical characteristics of polycrystalline silicon (poly-Si) thin film transistor (TFT) crystallized by excimer laser annealing (ELA) method were evaluated, The polycrystalline silicon thin-film transistor (poly-Si TFT) has higher electric field-effect-mobility and larger drivability than the amorphous silicon TFT. However, to poly-Si TFT's using conventional processes, the temperature must be very high. For this reason, an amorphous silicon film on a buried oxide was crystallized by annealing with a KrF excimer laser (248 nm)to fabricate a poly-Si film at low temperature. Then, High permittivity <TEX>$HfO_2$</TEX> of 20 nm as the gate-insulator was deposited by atomic layer deposition (ALD) to low temperature process. In addition, the solid phase crystallization (SPC) was compared to the ELA method as a crystallization technique of amorphous-silicon film. As a result, the crystallinity and surface roughness of poly-Si crystallized by ELA method was superior to the SPC method. Also, we obtained excellent device characteristics from the Poly-Si TFT fabricated by the ELA crystallization method." @default.
- W1620009642 created "2016-06-24" @default.
- W1620009642 date "2008-01-01" @default.
- W1620009642 modified "2023-09-26" @default.
- W1620009642 title "Characteristics of poly-Si TFTs using Excimer Laser Annealing Crystallization and high-k Gate Dielectrics" @default.
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- W1620009642 doi "https://doi.org/10.4313/jkem.2008.21.1.001" @default.
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