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    Silicon Heterojunction Solar Cells with up to 26.81% Efficiency

    May 10, 2023, Categories  Physics

    Silicon heterojunction solar cells with up to 26.81% efficiency
    Electrical performance of LONGi SHJ solar cells with different designs. a, Diagram of LONGi SHJ solar cells. b,c, Experimental (Exp.) and fitted (Fit.) J–V curves for the p-a-Si:H cell (b, cell 1 in Fig. 1) and the p-nc-Si:H cell (c, cell 2 in Fig. 1). The fitted curves are derived from the Quokka2 simulations (Methods). Intrinsic J–V curves are obtained according to the Richter et al. model of intrinsic recombination with photon recycling (photon recycling coefficient of 0.6). The black arrows between the Suns–VOC and light J–V curves indicate the series resistance of solar cells. Insets: the PV parameters certified by ISFH. d, PLA and corresponding RS at the MPP derived by fitting J–V curves in b and c; rec, recombination...
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