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Compositional variation in hybrid organic-inorganic lead halide perovskites : kinetically- versus thermodynamically-controlled synthesis
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dc.contributor.author | Tian, Jiyu | |
dc.contributor.author | Zysman-Colman, Eli | |
dc.contributor.author | Morrison, Finlay D. | |
dc.date.accessioned | 2022-05-12T23:48:08Z | |
dc.date.available | 2022-05-12T23:48:08Z | |
dc.date.issued | 2021-05-25 | |
dc.identifier | 274184743 | |
dc.identifier | b8a31dba-298a-4475-8b10-e9e36e5844ba | |
dc.identifier | 85106529457 | |
dc.identifier | 000656971000018 | |
dc.identifier.citation | Tian , J , Zysman-Colman , E & Morrison , F D 2021 , ' Compositional variation in hybrid organic-inorganic lead halide perovskites : kinetically- versus thermodynamically-controlled synthesis ' , Chemistry of Materials , vol. 33 , no. 10 , pp. 3650-3659 . https://doi.org/10.1021/acs.chemmater.1c00470 | en |
dc.identifier.issn | 0897-4756 | |
dc.identifier.other | ORCID: /0000-0002-2813-3142/work/93894058 | |
dc.identifier.other | ORCID: /0000-0001-7183-6022/work/93894288 | |
dc.identifier.uri | https://hdl.handle.net/10023/25361 | |
dc.description | Authors thank the Chinese Scholarship Council and the University of St Andrews for Ph.D. Studentship support (to JT, CSC No. 201603780020). | en |
dc.description.abstract | The formation and study of partial solid solutions in Az1-xFAxPbBr3, using reportedly similar sized cations azetidinium (Az+) and formamidinium (FA+), was explored via mechanosynthesis and precipitation synthesis. The composition and lattice parameters of samples from both syntheses were analyzed by 1H NMR and Rietveld refinement of powder X-ray diffraction. A clear mismatch in the composition of the perovskite was found between the precipitated samples and the corresponding solutions. Such a mismatch was not observed for samples obtained via mechanosynthesis. The discrepancy suggests products are kinetically-controlled during precipitation, compared to thermodynamically controlled mechanosynthesis. Furthermore, the cell volume as a function of composition in both hexagonal, 6H (Az-rich) and cubic, 3C (FA-rich) perovskite solid solutions suggests that FA+ is actually smaller than Az+, contradicting the literature. In the 3C (Az-poor) solid solutions, the extent of Az1-xFAxPbBr3 is unexpectedly smaller than in the corresponding methylammonium (MA+) system, Az1-xMAxPbBr3, which suggests that the extent of solid solution formation in these halide perovskites is predominantly dependent on the average A-cation size while the size mismatch plays a lesser role in comparison to oxides. | |
dc.format.extent | 1632992 | |
dc.language.iso | eng | |
dc.relation.ispartof | Chemistry of Materials | en |
dc.subject | QD Chemistry | en |
dc.subject | DAS | en |
dc.subject.lcc | QD | en |
dc.title | Compositional variation in hybrid organic-inorganic lead halide perovskites : kinetically- versus thermodynamically-controlled synthesis | en |
dc.type | Journal article | en |
dc.contributor.institution | University of St Andrews. School of Chemistry | en |
dc.contributor.institution | University of St Andrews. Organic Semiconductor Centre | en |
dc.contributor.institution | University of St Andrews. EaSTCHEM | en |
dc.identifier.doi | 10.1021/acs.chemmater.1c00470 | |
dc.description.status | Peer reviewed | en |
dc.date.embargoedUntil | 2022-05-13 |
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