Excimer Laser Crystallization of Amorphous Silicon Film with Artificially Designed Spatial Intensity Profile Beam

2019 ◽  
Vol 3 (8) ◽  
pp. 149-156
Author(s):  
Eok Su Kim ◽  
Ki-Bum Kim ◽  
Myung-Kwan Ryu ◽  
Hyuk Soon Kwon ◽  
Cheon-Hong Kim ◽  
...  

2003 ◽  
Vol 762 ◽  
Author(s):  
Sang-Hoon Jung ◽  
Su-Hyuk Kang ◽  
Hee-Sun Shin ◽  
Min-Koo Han

AbstractA simple lateral grain growth of polysilicon employing single excimer laser irradiation is proposed. In order to increase the size of silicon grain and to control the location of the large lateral grain, the oxide trench is employed under the amorphous silicon film in the proposed method. The proposed oxide trench, which is shaped like a triangle or a polygon with an acute angle, induces temperature gradient on the molten silicon film during the solidification. It was verified by SEM that about 2 μm-long silicon grains are successfully achieved near the oxide trench edge and the locations of lateral grains are controlled by the angular points of the diagram.







2007 ◽  
Vol 515 (19) ◽  
pp. 7508-7512 ◽  
Author(s):  
Maria Losurdo ◽  
Maria M. Giangregorio ◽  
Alberto Sacchetti ◽  
Pio Capezzuto ◽  
Giovanni Bruno ◽  
...  


2015 ◽  
Vol 1120-1121 ◽  
pp. 361-368
Author(s):  
Li Jie Deng ◽  
Wei He ◽  
Zheng Ping Li

Nanocrystalline silicon (nc-Si) thin film on glass substrate is subjected to excimer laser crystallized by varying the laser energy density in the range of 50~600 mJ/cm2. The effect of excimer laser crystallization on the structure of silicon film is investigated using Raman spectroscopy, X-ray diffraction, atomic force microscopy and scanning electron microscopy. The results show that polycrystalline silicon thin films can be obtained by excimer laser crystallization of nc-Si films. A laser threshold energy density of 200 mJ/cm2 is estimated from the change of crystalline fraction and surface roughness of the treated films. The growth of grain is observed and the crystallization mechanism is discussed based on the super lateral growth model. The nanocrystalline silicon grains in the films act as seeds for lateral growth to large grains.



1999 ◽  
Vol 146 (12) ◽  
pp. 4605-4610 ◽  
Author(s):  
John Viatella ◽  
Seung‐Mahn Lee ◽  
Rajiv K. Singh


2010 ◽  
Vol 13 (10) ◽  
pp. H346 ◽  
Author(s):  
Moojin Kim ◽  
GuangHai Jin ◽  
Hoonkee Min ◽  
HoKyoon Chung ◽  
Sangsoo Kim ◽  
...  


2003 ◽  
Vol 205 (1-4) ◽  
pp. 240-248 ◽  
Author(s):  
A. Hedler ◽  
S. Urban ◽  
F. Falk ◽  
H. Hobert ◽  
W. Wesch


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