Alliance for Sustainable Energy, LLC

Brown University

Jue Gong

Kai Zhu

Nitin Prabhakar Padture

Jinhui Tong

Yuanyuan Zhou

The present disclosure relates to a composition that includes a perovskite having a stoichiometry comprising AFASnB(IX), where A is a first cation, B is a second cation, X is a halide, and 0.5≤x≤0.9, 0.5≤y≤0.9, and 0≤z≤1. In some embodiments of the present disclosure, A may include at least one of cesium, guanidinium, and/or methylammonium. In some embodiments of the present disclosure, X may include at least one of bromide and/or chloride. In some embodiments of the present disclosure, z may be equal to zero.

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Chengdu, China

Jue Gong