Abstract The global demand for clean energy is driving the need for next‐generation solar technologies with higher power conversion efficiencies. Multijunction solar cells, which stack absorbers with cascaded bandgaps, offer a compelling path forward by more efficiently utilizing the solar spectrum. Among these, metal halide perovskites stand out for their bandgap tunability, enabling efficient tandem solar cells (TSCs) when paired with a range of semiconductors—including perovskite/perovskite, perovskite/silicon, perovskite/organic, and perovskite/CIGS. Central to these architectures are wide‐bandgap perovskites, which harvest high‐energy, short‐wavelength photons. This review highlights recent advances and challenges in perovskite‐based TSCs, focusing on the photophysical properties and application of wide‐bandgap perovskites across different tandem configurations. Future research directions are outlined aimed at enhancing performance and long‐term stability to accelerate industrial deployment.
Luo et al. (2025) studied this question.
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