International journal of renewable energy research abhishek Sharan



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INTERNATIONAL JOURNAL of RENEWABLE ENERGY RESEARCH
Abhishek Sharan
 et al. ,Vol.3, No. 3 
Study of temperature on performance of c-Si homo 
junction and a-Si/ c-Si hetero junction solar cells
Abhishek Sharan*

, B. Prasad*, S. Chandril*, S. P. Singh*, A. K. Saxena*, Manish Pathak*, Nishi Chahar**, 
S. Bhattacharya* 
*Amorphous Silicon Solar Cell Plant, Bharat Heavy Electricals Limited, BHEL-ASSCP, C/o BHEL House, Siri fort, New Delhi-
110049, India 
**Bharat Heavy Electricals Ltd. Electronics Division Mysore Road, Bangalore 560026 Karnataka India
(abhisheks@bhel.in, bprasad@bhel.in, schandril@bhel.in, spsingh@bhel.in, aksaxena@bhel.in, mpathak@bhel.in, 
nishi@bheledn.co.in, sudip@bhel.in )
‡ 
Corresponding Author; Abhishek Sharan, Amorphous Silicon Solar Cell Plant, Bharat Heavy Electricals Limited, BHEL-ASSCP, 
C/o BHEL House, Siri fort, New Delhi-110049, India Tel: +91-124-2579221 Fax: +91-124-2579227, abhisheks@bhel.in 
Received: 30.07.2013 Accepted: 29.08.2013 
Abstract-
Silicon hetero junction (SHJ) solar cells, employing a surface junction, combine beneficial effects of c-Si and a-Si solar 
cell technologies. In this work, we have successfully developed large area (137 Cm
2
), silicon hetero junction (SHJ) solar cells of 
efficiencies in the range of 16.0 to 16.5% and investigated variation with temperature of the electrical parameters of these as well 
as normal, diffused junction, c-Si homo junction solar cells. We have compared the temperature coefficients of parameters such as 
I
sc
, V
oc
, and P
max
and have compared them for both types of devices as these would have direct impact on performance, in field, of 
modules made out of these cells. We found out that c-Si homo junction cells are more sensitive to temperature changes as 
compared to SHJ solar cells. Also the presence of intrinsic amorphous silicon layer between p type a-Si and n type c-Si does not 
affect the power temperature coefficients; however they do affect the performance of the cells. 

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