Organometallic halide perovskites: sharp optical absorption edge and its relation to photovoltaic performance
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F14%3A00432513" target="_blank" >RIV/68378271:_____/14:00432513 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1021/jz500279b" target="_blank" >http://dx.doi.org/10.1021/jz500279b</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/jz500279b" target="_blank" >10.1021/jz500279b</a>
Alternative languages
Result language
angličtina
Original language name
Organometallic halide perovskites: sharp optical absorption edge and its relation to photovoltaic performance
Original language description
Solar cells based on organometallic halide perovskite absorber layers are emerging as a high-performance photovoltaic technology. Using highly sensitive photothermal de?ection and photocurrent spectroscopy, we measure the absorption spectrum of CH3NH3PbI3 perovskite thin ?lms at room temperature. We ?nd a high absorption coe?cient 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 con?rm the excellent electronic properties of perovskite thin ?lms, enabling the very high open-circuit voltages reported for perovskite solar cells. Following intentional moisture ingress, we ?nd that the absorption at photon energies below 2.4 eV is strongly reduced, pointing to a compositional change of the material.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Physical Chemistry Letters
ISSN
1948-7185
e-ISSN
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Volume of the periodical
5
Issue of the periodical within the volume
6
Country of publishing house
US - UNITED STATES
Number of pages
5
Pages from-to
1035-1039
UT code for WoS article
000333381400018
EID of the result in the Scopus database
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