Abstract
Improved stability and efficiency of two-terminal monolithic perovskite-silicon tandem solar cells will require reductions in recombination losses. By combining a triple-halide perovskite (1.68 electron volt bandgap) with a piperazinium iodide interfacial modification, we improved the band alignment, reduced nonradiative recombination losses, and enhanced charge extraction at the electron-selective contact. Solar cells showed open-circuit voltages of up to 1.28 volts in p-i-n single junctions and 2.00 volts in perovskite-silicon tandem solar cells. The tandem cells achieve certified power conversion efficiencies of up to 32.5%.
Original language | English |
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Pages (from-to) | 63-69 |
Number of pages | 7 |
Journal | Science |
Volume | 381 |
Issue number | 6653 |
DOIs | |
State | Published - 1 Jul 2023 |
Externally published | Yes |
Bibliographical note
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