DC pole | Wartość | Język |
dc.contributor.author | Minns, J.L. | - |
dc.contributor.author | Zajdel, Paweł | - |
dc.contributor.author | Chernyshov, D. | - |
dc.contributor.author | Van Beek, W. | - |
dc.contributor.author | Green, M.A. | - |
dc.date.accessioned | 2019-06-19T06:42:10Z | - |
dc.date.available | 2019-06-19T06:42:10Z | - |
dc.date.issued | 2017 | - |
dc.identifier.citation | Nature Communications, Vol. 8 (2017), art. no. 15152 | pl_PL |
dc.identifier.issn | 2041-1723 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.12128/9516 | - |
dc.description.abstract | Hybrid perovskites form an emerging family of exceptional light harvesting compounds.
However, the mechanism underpinning their photovoltaic effect is still far from understood,
which is impeded by a lack of clarity on their structures. Here we show that iodide ions in the
methylammonium lead iodide migrate via interstitial sites at temperatures above 280 K. This
coincides with temperature dependent static distortions resulting in pseudocubic local
symmetry. Based on bond distance analysis, the migrating and distorted iodines are at lengths
consistent with the formation of I2 molecules, suggesting a 2I -I2þ2e redox couple. The
actual formula of this compound is thus (CH3NH3)PbI3 2x(I2)x where xB0.007 at room
temperature. A crucial feature of the tetragonal structure is that the methylammonium ions
do not sit centrally in the A-site cavity, but disordered around two off-centre orientations that
facilitate the interstitial ion migration via a gate opening mechanism. | pl_PL |
dc.language.iso | en | pl_PL |
dc.rights | Uznanie autorstwa 3.0 Polska | * |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/pl/ | * |
dc.subject | iodide ion | pl_PL |
dc.subject | ammonium | pl_PL |
dc.title | Structure and interstitial iodide migration in hybrid perovskite methylammonium lead iodide | pl_PL |
dc.type | info:eu-repo/semantics/article | pl_PL |
dc.relation.journal | Nature Communications | pl_PL |
dc.identifier.doi | 10.1038/ncomms15152 | - |
Pojawia się w kolekcji: | Artykuły (WNŚiT)
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