Browsing by Author "Huang, Shih-Yang"

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Mechanism of Aluminum Induced Lateral Crystallization of Amorphous Silicon
(2010)
Huang, Shih-Yang
;
Wang, Chuan-Chi
;
Lin, Chih-Lung
;
Tsai, Yu-Lin
;
Chao, Cheun-Guang
The aluminium-induced lateral crystallization (AILC) of amorphous silicon (a-Si) on a glass substrate has been investigated. By means of a photoresist-based process, Al islands (100 nm) were thermally evaporated using 15 V, 3.5 A, and 25 V, 5.6A on the a-Si layer (100 nm), which was deposited on a glass substrate. SEM examinations indicated that the Al islands exhibited smooth and crystalline-grain morphology. Annealing processes were carried out at 748 and 823 K for various times. After annealing, AILC could be clearly observed in the crystalline-grain sample, but not in the smooth sample. TEM analyses showed that the mechanism of AILC resulted from two layer exchange processes. First, the Al islands exchanged with the underlying a-Si layer vertically during AIC, and then the generation of Al particles accompanying AIC caused a lateral layer exchange with the remaining a-Si layer with further annealing. (C) 2010 The Japan Society of Applied Physics