Yadav, Akash and Singh, Gajendra and Nekovei, Reza and Jeyakumar, R. (2015) c-Si solar cells formed from spin-on phosphoric acid and boric acid. Renewable Energy, 80. pp. 80-84. ISSN 0960-1481

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Abstract

This paper reports the fabrication of c-Si based solar cells using spin-on dopants. Solar cells were developed by texturing both surfaces of the c-Si, and forming the p-n junction by spin-coating the n-type dopant followed by rapid thermal processing (RTP). For back surface field formation on the rear side, a similar spin-coating step was undertaken for one cell and e-beam Al deposition for the other. In the case of double-sided spin-coated cell, simultaneous p-n junction and back surface field were formed in one RTP cycle. Without using high performance features in the device, double-sided spin-on doped cell showed V-oc of 600 +/- 0.01 mV, J(sc) of 33.1 +/- 0.03 mA/cm(2), FF of 74.26 +/- 0.06% and efficiency of 14.74%. As compared to single-sided spin-on doped cell, an improvement in efficiency of about 1.3% has been obtained which can be attributed to boron back surface field. Double-sided spin-on process significantly reduces thermal budget and improves throughput Besides texturization, high efficiency features have not been used in the device. The results clearly demonstrate that c-Si based solar cells are potentially cost effective to manufacture.

Item Type:	Article
Uncontrolled Keywords:	Low cost c-Si solar cell Spin-on doped process External quantum efficiency Solar cell characterization Boron back surface field Texturization
Subjects:	Energy Fuels
Divisions:	UNSPECIFIED
Depositing User:	Dr. Rajpal Walke
Date Deposited:	20 Sep 2016 11:22
Last Modified:	20 Sep 2016 11:22
URI:	http://npl.csircentral.net/id/eprint/1754

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