perovskites are described, including A2B(I)B(III)X6 and A2B(IV)X6 double perovskites. Subsequently, chalco … of optoelectronic and electronic devices.2,14–17 Amongst the … or AB(IV)X6, where the B site is occupied by a tetravalent cation. Table 1 … deficient Sn. Cs2SnI6 is an n-type semiconductor with a direct band gap …

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