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We present back-contacted amorphous/crystalline silicon heterojunction solar cells (IBC-SHJ) with a contact system leading to fill factors up to 78.8% and high current densities, the latter enabled by classical high temperature processing techniques. Conversion efficiencies of up to 20.2±0.4% are reached which constitutes an improvement of over 4% absolute with respect to previously reported results...
We compare recently reported results of efficient back-contacted amorphous/crystalline silicon heterojunction solar cells with fill factors up to 78.8% with calculated j–V characteristics that are derived from an area-weighted summation of recombination currents taken from lifetime measurements. We compare solar cell structures with and without an intrinsic buffer layer beneath the p-type amorphous...
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