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c-Si solar cells formed from spin-on phosphoric acid and boric acid

Author

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  • Yadav, Akash
  • Singh, Gajendra
  • Nekovei, Reza
  • Jeyakumar, R.

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 Voc of 600 ± 0.01 mV, Jsc of 33.1 ± 0.03 mA/cm2, 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.

Suggested Citation

  • Yadav, Akash & Singh, Gajendra & Nekovei, Reza & Jeyakumar, R., 2015. "c-Si solar cells formed from spin-on phosphoric acid and boric acid," Renewable Energy, Elsevier, vol. 80(C), pages 80-84.
    • Handle: RePEc:eee:renene:v:80:y:2015:i:c:p:80-84
    DOI: 10.1016/j.renene.2015.01.055
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    Cited by:

    1. Farrell, C.C. & Osman, A.I. & Doherty, R. & Saad, M. & Zhang, X. & Murphy, A. & Harrison, J. & Vennard, A.S.M. & Kumaravel, V. & Al-Muhtaseb, A.H. & Rooney, D.W., 2020. "Technical challenges and opportunities in realising a circular economy for waste photovoltaic modules," Renewable and Sustainable Energy Reviews, Elsevier, vol. 128(C).

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