Royal Society of Chemistry, Chemical Science, 17(13), p. 4794-4800, 2022
DOI: 10.1039/d1sc07045b
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By using a lead-free AgBi-based scheme, we successfully synthesized a two-dimensional double perovskite ferroelastic (DPA)4AgBiBr8 with high Tc of 375 K and a narrow band gap of 2.44 eV, where DPA is 2,2-dimethylpropan-1-aminium.