Investigating optical adsorption properties of lead‐free double perovskite semiconductors Cs2SnI6−xBrx (x = 0–6) via first principles calculation

In this work, the properties of the Br− ion‐doped Cs2SnI6 system (Cs2SnI6−xBrx, x = 0–6) are systematically explored via the first principle calculation. The evolution of Cs2SnI6−xBrx crystal structure in the doping process is obtained by regulating the doping positions where I− ions are replaced wi...

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