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Investigation of improved PV parameters through AMPS-1D in micromorph tandem solar cells with a microcrystalline tunnel recombination junction

Abstract : The quest of higher conversion efficiencies of solar cells has led to the improvement of material properties and the design of new structures for a better use of the solar spectrum. One of the most promising thin-film silicon solar cell concepts is “Micromorph” tandem solar cells consisting of a microcrystalline silicon bottom subcell and an amorphous silicon top subcell. In this paper, a micromorph tandem solar cell (a-Si:H/µc-Si:H) with an intermediate microcrystalline tunnel recombination junction (TRJ) has been designed and analyzed by simulations using AMPS-1D (Analysis of Microelectronic and Photonic Structures) device simulator. A higher efficiency for the micromorph tandem has been achieved by optimizing each subcell and the TRJ. The open-circuit voltage VOC is improved and it is nearly the sum of the VOCs of the two corresponding subcells. However, the fill factor FF and short-circuit current JSC are lower in comparison to the single amorphous solar cells. The spectral response behavior of the micromorph tandem has shown better utilization of solar spectrum. © 2016 Taylor & Francis Group, LLC.
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https://hal-univ-rennes1.archives-ouvertes.fr/hal-01368119
Contributor : Laurent Jonchère <>
Submitted on : Monday, September 19, 2016 - 10:22:08 AM
Last modification on : Monday, October 5, 2020 - 9:44:04 AM

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F. Maachou, B. Zebentout, A. Bensmain, Z. Benamara, T.M. Brahim. Investigation of improved PV parameters through AMPS-1D in micromorph tandem solar cells with a microcrystalline tunnel recombination junction. Molecular Crystals and Liquid Crystals, Taylor & Francis, 2016, 627 (1), pp.29--37. ⟨10.1080/15421406.2015.1137117⟩. ⟨hal-01368119⟩

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