The impact of eco-friendly chemical incorporation on the thermal oxidation process of flax fiber prior to carbonization and activation

Author(s):  
Md. Mahbubor Rahman ◽  
Ismail Karacan
Refractories ◽  
1992 ◽  
Vol 33 (1-2) ◽  
pp. 14-18
Author(s):  
Yu. A. Pirogov ◽  
P. Ya. Pustovar ◽  
I. A. Kutuzyan ◽  
Yu. F. Boiko

2004 ◽  
Vol 457-460 ◽  
pp. 1357-1360 ◽  
Author(s):  
Antonella Poggi ◽  
Roberta Nipoti ◽  
Sandro Solmi ◽  
M. Bersani ◽  
L. Vanzetti

2000 ◽  
Vol 623 ◽  
Author(s):  
J. C. Ferrer ◽  
Z. Liliental-Weber ◽  
H. Reese ◽  
Y.J. Chiu ◽  
E. Hu

AbstractThe lateral thermal oxidation process of Al0.98Ga0.02As layers has been studied by transmission electron microscopy. Growing a low-temperature GaAs layer below the Al0.98Ga0.02As has been shown to result in better quality of the oxide/GaAs interfaces compared to reference samples. While the later have As precipitation above and below the oxide layer and roughness and voids at the oxide/GaAs interface, the structures with low-temperature have less As precipitation and develop interfaces without voids. These results are explained in terms of the diffusion of the As toward the low temperature layer. The effect of the addition of a Si02 cap layer is also discussed.


1996 ◽  
Vol 143 (1) ◽  
pp. 244-251 ◽  
Author(s):  
S. Nakashima ◽  
T. Katayama ◽  
Y. Miyamura ◽  
A. Matsuzaki ◽  
M. Kataoka ◽  
...  

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
Shun Sing Liao ◽  
Yueh Chin Lin ◽  
Chuan Lung Chuang ◽  
Edward Yi Chang

In this study, the efficiency of the multicrystalline was improved by inserting a two-step growth thermal oxide layer as the surface passivation layer. Two-step thermal oxidation process can reduce carrier recombination at the surface and improve cell efficiency. The first oxidation step had a growth temperature of 780°C, a growth time of 5 min, and with N2/O2 gas flow ratio 12 : 1. The second oxidation had a growth temperature of 750°C, growth time of 20 min, and under pure N2 gas environment. Carrier lifetime was increased to 15.45 μs, and reflectance was reduced 0.52% using the two-step growth method as compared to the conventional one-step growth oxide passivation method. Consequently, internal quantum efficiency of the solar cell increased 4.1%, and conversion efficiency increased 0.37%. These results demonstrate that the two-step thermal oxidation process is an efficient way to increase the efficiency of the multicrystalline silicon solar cells.


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