Two-step deposition method achieved over 20% efficiency in lead halide perovskite solar cells, indicating improved tandem performance.
We report a two-step thermal evaporation–close space sublimation deposition method for tunable bandgap lead halide perovskites with single junction solar cell efficiencies exceeding 20%. These absorbers are integrated into perovskite–silicon tandem solar cells with stabilized efficiencies of >29%.
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Kuba et al. (2026) studied this question.
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