Mao, Lingling;
Morgan, Emily E;
Li, Alice;
Kennard, Rhiannon M;
Hong, Min Ji;
Liu, Yang;
Dahlman, Clayton J;
... Seshadri, Ram; + view all
(2022)
Layered Hybrid Lead Iodide Perovskites with Short Interlayer Distances.
ACS Energy Letters
, 7
(8)
pp. 2801-2806.
10.1021/acsenergylett.2c01321.
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Abstract
Layered hybrid perovskites comprise modular components that are individually highly tunable, resulting in materials with a range of structures and properties. In these layered materials, the usual assumption is of two-dimensional electronic behavior, because of the relatively large separations between the inorganic layers. Here, we report two layered hybrid lead iodide perovskites that possess unusually short interlayer distances: (IPA)_{2}(MA)Pb_{2}I_{7} and (ACA)(MA)PbI_{4} (IPA = isopropylammonium, MA = methylammonium, ACA = acetamidinium). These compounds are prepared from mixing small organic cations, where they crystallize in a Ruddlesden–Popper type structure and a structure with alternating cations in the interlayer space, respectively. The crystal structures are compared in detail with related structures, and electronic structures are analyzed using density functional theory based calculations. Time-resolved microwave conductivity measurements are employed to provide insight into charge transport in these compounds. This work exemplifies the unusual templating role of small organic cations in the layered halide compounds.
| Type: | Article |
|---|---|
| Title: | Layered Hybrid Lead Iodide Perovskites with Short Interlayer Distances |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1021/acsenergylett.2c01321 |
| Publisher version: | https://doi.org/10.1021/acsenergylett.2c01321 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions. |
| Keywords: | Cations, Chemical structure, Crystal structure, Layered materials, Perovskites |
| UCL classification: | UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng UCL > Provost and Vice Provost Offices > UCL BEAMS UCL |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10154108 |
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