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Effects of contact electrode size on the characteristics of polycrystalline-Si p–i–n solar cells

M. H. Juang, H. Y. Huang and S. L. Jang

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Abstract: The effects of contact electrode size on the photo-voltaic characteristics of polycrystalline-Si p–i–n solar cells have been studied, with respect to a unit-cell pitch size of 1 μ m width. For the non-transparent Al contact electrode with a contact width of 0.05–0.2 μm, the short-circuit current is obviously reduced with increasing contact width, due to a larger area of optical reflection by the electrode. On the other hand, even when using a transparent ITO (indium-tin-oxide) electrode, a larger width of contact electrode may also cause a smaller short-circuit current, due to a larger area of optical absorption by the electrode. However, for this ITO electrode, the contact electrode of 0.05 μm width causes a smaller short-circuit current than that of 0.1 μm width, primarily ascribed to a smaller area for collecting carrier and a larger contact resistance. As a result, while using the ITO contact electrode to enhance the conversion efficiency of the solar cell, a proper width of contact electrode should be employed to optimize the photo-voltaic characteristics.

Key words: polycrystalline-Si solar cell

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    Received: Revised: 01 October 2010 Online: Published: 01 March 2011

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      M. H. Juang, H. Y. Huang, S. L. Jang. Effects of contact electrode size on the characteristics of polycrystalline-Si p–i–n solar cells[J]. Journal of Semiconductors, 2011, 32(3): 034004. doi: 10.1088/1674-4926/32/3/034004 M. H. Juang, H. Y. Huang, S. L. Jang. Effects of contact electrode size on the characteristics of polycrystalline-Si p–i–n solar cells[J]. J. Semicond., 2011, 32(3): 034004. doi: 10.1088/1674-4926/32/3/034004.Export: BibTex EndNote
      Citation:
      M. H. Juang, H. Y. Huang, S. L. Jang. Effects of contact electrode size on the characteristics of polycrystalline-Si p–i–n solar cells[J]. Journal of Semiconductors, 2011, 32(3): 034004. doi: 10.1088/1674-4926/32/3/034004

      M. H. Juang, H. Y. Huang, S. L. Jang. Effects of contact electrode size on the characteristics of polycrystalline-Si p–i–n solar cells[J]. J. Semicond., 2011, 32(3): 034004. doi: 10.1088/1674-4926/32/3/034004.
      Export: BibTex EndNote

      Effects of contact electrode size on the characteristics of polycrystalline-Si p–i–n solar cells

      doi: 10.1088/1674-4926/32/3/034004
      • Accepted Date: 2010-05-25
      • Revised Date: 2010-10-01
      • Published Date: 2011-02-23

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