[NH(CH)NH]SnX (X = Br, I): Dion-Jacobson type 2-D perovskites with short interlayer spacing
Two-dimensional tin( ii ) halide perovskites stand as an environmentally benign alternative to Pb( ii ) halide perovskites. However, they are often challenging to make due to the oxidation of Sn( ii ) ion to more stable Sn( iv ) ion. Here we report hybrid tin bromide and iodide perovskites: (1,4-BDA...
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Veröffentlicht in: | Dalton transactions : an international journal of inorganic chemistry 2024-02, Vol.53 (6), p.2465-247 |
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Zusammenfassung: | Two-dimensional tin(
ii
) halide perovskites stand as an environmentally benign alternative to Pb(
ii
) halide perovskites. However, they are often challenging to make due to the oxidation of Sn(
ii
) ion to more stable Sn(
iv
) ion. Here we report hybrid tin bromide and iodide perovskites: (1,4-BDA)Sn(
iv
)Br
6
and (1,4-BDA)Sn(
ii
)X
4
(where X = Br, I; 1,4-BDA = 1,4-diammoniumbutane) with 0D and 2D structures, respectively. Their synthesis, structural characterization and photophysical properties are reported. They show bandgaps in the 1.94-2.70 eV range.
Structurally characterized 2-dimensional perovskites (1,4-BDA)Sn
II
Br
4
and (1,4-BDA)Sn
II
I
4
are reported with the interlayer gap of ∼ 10 Å. They are synthesized as phase pure materials in aqueous medium by suppressing the formation of Sn
IV
impurities. |
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ISSN: | 1477-9226 1477-9234 |
DOI: | 10.1039/d3dt03772j |