Microstructural influence of hydrogenated amorphous silicon on polycrystalline emitter solar cells prepared by top-down aluminum induced crystallization

2011 ◽  
Author(s):  
S D Shumate ◽  
M K Hafeezuddin ◽  
D A Hutchings ◽  
H A Naseem
Keyword(s):  
Solar Cells ◽  
Amorphous Silicon ◽  
Hydrogenated Amorphous Silicon ◽  
Top Down ◽  
Hydrogenated Amorphous ◽  
Induced Crystallization ◽  
Aluminum Induced Crystallization

Effect of stress on the aluminum-induced crystallization of hydrogenated amorphous silicon films

2006 ◽  
Vol 21 (10) ◽  
pp. 2582-2586 ◽  
Author(s):  
Maruf Hossain ◽  
Husam H. Abu-Safe ◽  
Hameed Naseem ◽  
William D. Brown
Keyword(s):  
Amorphous Silicon ◽  
Initial Stress ◽  
Hydrogenated Amorphous Silicon ◽  
Silicon Films ◽  
Radius Of Curvature ◽  
Si Substrates ◽  
Before And After ◽  
Hydrogenated Amorphous ◽  
Induced Crystallization ◽  
Aluminum Induced Crystallization

The effect of stress, resulting from the presence of hydrogen, on the aluminum-induced crystallization of hydrogenated amorphous silicon films was studied. Layered thin films of hydrogenated and unhydrogenated amorphous silicon and aluminum, deposited by sputtering, were used to study this effect. The stress of the deposited films was determined by measuring the radius of curvature of c-Si substrates before and after deposition of the films. It was observed that unhydrogenated amorphous silicon films exhibit a high compressive stress compared with hydrogenated ones. The amount of stress is shown to decrease with increasing hydrogen content. It was also observed that aluminum always provides tensile stress. After the initial stress measurements, all the samples were annealed for 30 min at temperatures between 200 °C and 400 °C. X-ray diffraction was used to determine the crystallinity of the silicon films. The results of the study show that the temperature at which crystallization of amorphous silicon is initiated is lower for films with a lower initial stress.

Vacuum-enhanced nickel-induced crystallization of hydrogenated amorphous silicon

2012 ◽  
Vol 112 (7) ◽  
pp. 073506 ◽  
Author(s):  
N. Budini ◽  
P. A. Rinaldi ◽  
R. D. Arce ◽  
J. A. Schmidt ◽  
R. R. Koropecki ◽  
...  
Keyword(s):  
Amorphous Silicon ◽  
Hydrogenated Amorphous Silicon ◽  
Hydrogenated Amorphous ◽  
Induced Crystallization
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