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A new type of high-efficiency bifacial silicon solar cell with external busbars and a current-collecting wire grid

  • Physics of Semiconductor Devices
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Abstract

Results regarding bifacial silicon solar cells with external busbars are presented. The cells consist of [n + p(n)p +] Cz-Si structures with a current-collecting system of new design: a laminated grid of wire external busbars (LGWEB). A LGWEB consists of a transparent conducting oxide film deposited onto a Si structure, busbars adjacent to the Si structure, and a contact wire grid attached simultaneously to the oxide and busbars using the low-temperature lamination method. Bifacial LGWEB solar cells demonstrate record high efficiency for similar devices: 17.7%(n-Si)/17.3%(p-Si) with 74–82% bifaciality for the smooth back surface and 16.3%(n-Si)/16.4%(p-Si) with 89% bifaciality for the textured back surface. It is shown that the LGWEB technology can provide an efficiency exceeding 21%.

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Authors and Affiliations

  1. Nuclear Physics Institute, Moscow State University, Moscow, 119992, Russia

    G. G. Untila, T. N. Kost & A. B. Chebotareva

  2. Kvark Scientific-Production Firm, Krasnodar, 350000, Russia

    M. B. Zaks, A. M. Sitnikov & O. I. Solodukha

Authors
  1. G. G. Untila
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  2. T. N. Kost
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  3. A. B. Chebotareva
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  4. M. B. Zaks
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  5. A. M. Sitnikov
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  6. O. I. Solodukha
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__________

Translated from Fizika i Tekhnika Poluprovodnikov, Vol. 39, No. 11, 2005, pp. 1393–1398.

Original Russian Text Copyright © 2005 by Untila, Kost, Chebotareva, Zaks, Sitnikov, Solodukha.

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Untila, G.G., Kost, T.N., Chebotareva, A.B. et al. A new type of high-efficiency bifacial silicon solar cell with external busbars and a current-collecting wire grid. Semiconductors 39, 1346–1351 (2005). https://doi.org/10.1134/1.2128464

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  • DOI: https://doi.org/10.1134/1.2128464

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