Transactions on Electrical and Electronic Materials

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Front Surface Grid Design for High Efficiency Solar Cells

  • Gangopadhyay Utpal (School of Electrical and Computer Engineering, Sungkyunkwan University) ;
  • Kim, Kyung-Hae (School of Electrical and Computer Engineering, Sungkyunkwan University) ;
  • Basu Prabir Kanti (School of Electrical and Computer Engineering, Sungkyunkwan University) ;
  • Dhungel Suresh Kumar (School of Electrical and Computer Engineering, Sungkyunkwan University) ;
  • Jung, Sung-Wook (Department of Electronics and Tele-communication Engineering, Jadavpur University) ;
  • Yia, Jun-Sin (Department of Electronics and Tele-communication Engineering, Jadavpur University)
  • Published : 2005.04.01
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Abstract

Standard crystalline solar cells are generally fabricated with the front grid pattern of silver paste contact. We have reported a detailed theoretical analysis of the proposed segmented cross grid line pattern in this paper. This work was carried out for the optimization of spacing and width of grid finger, main busbar and sub-busbar. The overall electrical and optical losses due to front contact were brought down to $10\%$ or even less as compared to the usual loss of $15\%$ or more in the conventional screen printed silver paste technology by choosing proper grid pattern and optimizing the grid parameters. The total normalized power loss for segmented mesh grid with plated metal contact was also observed and the total power loss could be brought down to $10.04\%$ unlike $11.57\%$ in the case of continuous grid and plated contact. This paper is able to outline the limitations of conventional screen printed contact.

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References

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