The discovery of double perovskites A2B(I)B(III)X6 (A = monovalent cation; … dimensional halide perovskites for novel electronic applications. … approaches is that mutating two Pb(II) into a pair of B(I)/B(III) cations or a B(IV) cation to form … semiconductor with d-d transitions also exhibits a high absorption coefficient (>105 …
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