Organic-inorganic halide perovskites: perspectives for silicon-based tandem solar cells
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F14%3A00439580" target="_blank" >RIV/68378271:_____/14:00439580 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1109/JPHOTOV.2014.2355421" target="_blank" >http://dx.doi.org/10.1109/JPHOTOV.2014.2355421</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1109/JPHOTOV.2014.2355421" target="_blank" >10.1109/JPHOTOV.2014.2355421</a>
Alternative languages
Result language
angličtina
Original language name
Organic-inorganic halide perovskites: perspectives for silicon-based tandem solar cells
Original language description
Using highly sensitive photothermal deflection spectroscopy, we measure the absorption spectrum of CH3NH3PbI3 perovskite films at room temperature. We find a band edge with a particularly steep absorption tail, translating into an Urbach energy as smallas 15 meV. The sub-bandgap optical absorption is below the detection limit i.e. <1 cm-1. These results confirm the excellent electronic properties of organometallic halide perovskite thin films, resulting in very high open-circuit voltages obtained for perovskite solar cells. The shape of the absorption edges proves that it has a direct bandgap, with bandgap of about 1.55 eV. Following intentional moisture ingress, we find that the absorption at photon energies below 2.5 eV is strongly reduced, suggesting a compositional change of the deposited material. The very low subgap absorption together with open-circuit voltages >1.1 V renders perovskite solar cells a promising option for Si-based tandem solar cells.
Czech name
—
Czech description
—
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
—
Result continuities
Project
<a href="/en/project/LM2011026" target="_blank" >LM2011026: Laboratory of nanstructures and nanomaterials</a><br>
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
IEEE Journal of Photovoltaics
ISSN
2156-3381
e-ISSN
—
Volume of the periodical
4
Issue of the periodical within the volume
6
Country of publishing house
US - UNITED STATES
Number of pages
7
Pages from-to
1545-1551
UT code for WoS article
000344542900035
EID of the result in the Scopus database
—