About: Organometallic halide perovskites: sharp optical absorption edge and its relation to photovoltaic performance

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About: Organometallic halide perovskites: sharp optical absorption edge and its relation to photovoltaic performance Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Solar cells based on organometallic halide perovskite absorber layers are emerging as a high-performance photovoltaic technology. Using highly sensitive photothermal deﬂection and photocurrent spectroscopy, we measure the absorption spectrum of CH3NH3PbI3 perovskite thin ﬁlms at room temperature. We ﬁnd a high absorption coeﬃcient with particularly sharp onset. Below the bandgap, the absorption is exponential over more than four decades with an Urbach energy as small as 15 meV, which suggests a well-ordered microstructure. No deep states are found down to the detection limit of 1cm1. These results conﬁrm the excellent electronic properties of perovskite thin ﬁlms, enabling the very high open-circuit voltages reported for perovskite solar cells. Following intentional moisture ingress, we ﬁnd that the absorption at photon energies below 2.4 eV is strongly reduced, pointing to a compositional change of the material. Solar cells based on organometallic halide perovskite absorber layers are emerging as a high-performance photovoltaic technology. Using highly sensitive photothermal deﬂection and photocurrent spectroscopy, we measure the absorption spectrum of CH3NH3PbI3 perovskite thin ﬁlms at room temperature. We ﬁnd a high absorption coeﬃcient with particularly sharp onset. Below the bandgap, the absorption is exponential over more than four decades with an Urbach energy as small as 15 meV, which suggests a well-ordered microstructure. No deep states are found down to the detection limit of 1cm1. These results conﬁrm the excellent electronic properties of perovskite thin ﬁlms, enabling the very high open-circuit voltages reported for perovskite solar cells. Following intentional moisture ingress, we ﬁnd that the absorption at photon energies below 2.4 eV is strongly reduced, pointing to a compositional change of the material. (en)
Title	Organometallic halide perovskites: sharp optical absorption edge and its relation to photovoltaic performance Organometallic halide perovskites: sharp optical absorption edge and its relation to photovoltaic performance (en)
skos:prefLabel	Organometallic halide perovskites: sharp optical absorption edge and its relation to photovoltaic performance Organometallic halide perovskites: sharp optical absorption edge and its relation to photovoltaic performance (en)
skos:notation	RIV/68378271:_____/14:00432513!RIV15-AV0-68378271
http://linked.open...avai/riv/aktivita	I
http://linked.open...avai/riv/aktivity	I
http://linked.open...iv/cisloPeriodika	6
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Ledinský, Martin Holovský, Jakub
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Fyzikální ústav AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	35144
http://linked.open...ai/riv/idVysledku	RIV/68378271:_____/14:00432513
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	energy conversion and storage; energy and charge transport; perovskite (en)
http://linked.open.../riv/klicoveSlovo	energy and charge transport energy conversion and storage perovskite
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[A1F86B3D1FFA]
http://linked.open...i/riv/nazevZdroje	Journal of Physical Chemistry Letters
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	9 (xsd:int)
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	5
http://linked.open...iv/tvurceVysledku	Ledinský, Martin Moon, S. J. Holovský, Jakub Yum, J. H. Ballif, C. De Wolf, S. Haug, F. J. Löper, P. Niesen, B.
http://linked.open...ain/vavai/riv/wos	000333381400018
issn	1948-7185
number of pages	5 (xsd:int)
http://bibframe.org/vocab/doi	10.1021/jz500279b

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