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Three-terminal heterojunction bipolar transistor solar cell for high-efficiency photovoltaic conversion

Author

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  • A. Martí

    (Instituto de Energía Solar, Universidad Politécnica de Madrid, ETSI Telecomunicación, Ciudad Universitaria sn)

  • A. Luque

    (Instituto de Energía Solar, Universidad Politécnica de Madrid, ETSI Telecomunicación, Ciudad Universitaria sn)

Abstract

Here we propose, for the first time, a solar cell characterized by a semiconductor transistor structure (n/p/n or p/n/p) where the base–emitter junction is made of a high-bandgap semiconductor and the collector is made of a low-bandgap semiconductor. We calculate its detailed-balance efficiency limit and prove that it is the same one than that of a double-junction solar cell. The practical importance of this result relies on the simplicity of the structure that reduces the number of layers that are required to match the limiting efficiency of dual-junction solar cells without using tunnel junctions. The device naturally emerges as a three-terminal solar cell and can also be used as building block of multijunction solar cells with an increased number of junctions.

Suggested Citation

  • A. Martí & A. Luque, 2015. "Three-terminal heterojunction bipolar transistor solar cell for high-efficiency photovoltaic conversion," Nature Communications, Nature, vol. 6(1), pages 1-6, November.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms7902
    DOI: 10.1038/ncomms7902
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    Cited by:

    1. Khan, Firoz & Rezgui, Béchir Dridi & Khan, Mohd Taukeer & Al-Sulaiman, Fahad, 2022. "Perovskite-based tandem solar cells: Device architecture, stability, and economic perspectives," Renewable and Sustainable Energy Reviews, Elsevier, vol. 165(C).

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