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초록

Perovskite-inspired materials (PIMs) have been investigated as alternatives to organic lead halide perovskites in order to explore novel lead-free materials for photovoltaics. This review describes the structural and optoelectronic properties of PIMs including double perovskites, chalcohalides, rudorffites, bismuth halides, and defect-ordered A3B2X9. Efforts have been recently made to overcome high carrier effective mass, non-radiative recombination, and large bandgaps of PIMs, limiting the photovoltaic performance of PIM-based solar cells. By analyzing the basis for the inferior performance observed by the PIMs, we propose strategies for enhancing the PIM-based solar cells in terms of engineering bulk light-absorbing PIM layers and their interfaces in order to provide insights into the design of future photovoltaic materials.

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