Single-crystal perovskite solar cells with a lateral structure yield an efficiency enhancement 44-fold that of polycrystalline thin films, due to the much longer carrier diffusion length. A piezoelectric effect observed in perovskite single-crystal and the strain-generated grain-boundaries enable ion migration to form a p-i-n structure.
Keywords: lateral-structure solar cells; perovskite single crystals; perovskite solar cells; piezoelectric; single crystal solar cells.
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