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Vacuum-Deposited Cesium Tin Iodide Thin Films with Tunable Thermoelectric Properties

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Vacuum-Deposited Cesium Tin Iodide Thin Films with Tunable Thermoelectric Properties

dc.contributor.author	Sebastia-Luna, Paz
dc.contributor.author	Pokharel, Unnati
dc.contributor.author	Huisman, Bas A. H.
dc.contributor.author	Koster, L. Jan Anton
dc.contributor.author	Palazón Huet, Francisco
dc.contributor.author	Bolink, Henk
dc.date.accessioned	2022-08-30T08:41:05Z
dc.date.available	2022-08-30T08:41:05Z
dc.date.issued	2022
dc.identifier.citation	Sebastia-Luna, Paz Pokharel, Unnati Huisman, Bas A. H. Koster, L. Jan Anton Palazón Huet, Francisco Bolink, Henk 2022 Vacuum-Deposited Cesium Tin Iodide Thin Films with Tunable Thermoelectric Properties Acs Applied Energy Materials 5 8 10216 10223
dc.identifier.uri	https://hdl.handle.net/10550/83569
dc.description.abstract	Most current thermoelectric materials have important drawbacks, such as toxicity, scarceness, and peak operating temperatures above 300 °C. Herein, we report the thermoelectric properties of different crystalline phases of Sn-based perovskite thin films. The 2D phase, Cs2SnI4, is obtained through vacuum thermal deposition and easily converted into the black β phase of CsSnI3 (B-β CsSnI3) by annealing at 150 °C. B-β CsSnI3 is a p-type semiconductor with a figure of merit (ZT) ranging from 0.021 to 0.033 for temperatures below 100 °C, which makes it a promising candidate to power small electronic devices such as wearable sensors which may be interconnected in the so-called Internet of Things. The B-β phase is stable in nitrogen, whereas it spontaneously oxidizes to Cs2SnI6 upon exposure to air. Cs2SnI6 shows a negative Seebeck coefficient and an ultralow thermal conductivity. However, the ZT values are 1 order of magnitude lower than for B-β CsSnI3 due to a considerably lower electrical conductivity.
dc.language.iso	eng
dc.relation.ispartof	Acs Applied Energy Materials, 2022, vol. 5, num. 8, p. 10216-10223
dc.subject	Materials
dc.subject	Conductivitat elèctrica
dc.title	Vacuum-Deposited Cesium Tin Iodide Thin Films with Tunable Thermoelectric Properties
dc.type	journal article	es_ES
dc.date.updated	2022-08-30T08:41:06Z
dc.identifier.doi	10.1021/acsaem.2c01936
dc.identifier.idgrec	154563
dc.rights.accessRights	open access	es_ES