Point Defect-Mediated Interface Formation and Appearance of a Cooper Minimum for AlOx Atomic-Layer-Deposited Films on CH3NH3PbI3
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F19%3A10405931" target="_blank" >RIV/00216208:11320/19:10405931 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=LyFBw5l2T3" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=LyFBw5l2T3</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acs.jpcc.9b05282" target="_blank" >10.1021/acs.jpcc.9b05282</a>
Alternative languages
Result language
angličtina
Original language name
Point Defect-Mediated Interface Formation and Appearance of a Cooper Minimum for AlOx Atomic-Layer-Deposited Films on CH3NH3PbI3
Original language description
We report on the interaction of CH3NH3PbI3 substrates with AlOx films prepared by atomic layer deposition at room temperature. We use synchrotron radiation-based photoemission spectroscopy and study the Pb 4f, I 3d, and Al 2p core levels as well as the corresponding valence band states (Pb Sd and O 2p). A Cooper minimum is observed for both the Pb 5d and O 2p states, and it indicates that the bonding at the interface must be covalent. We focus on the electronic properties of the substrate and its interface and identify a delicate charge balance between polaronic and excitonic states in MAPI and AlOx. The perovskite vacancy sites, identified by changes in the core-level intensities, mediate the charge balance and covalent interaction.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10305 - Fluids and plasma physics (including surface physics)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
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 C
ISSN
1932-7447
e-ISSN
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Volume of the periodical
123
Issue of the periodical within the volume
38
Country of publishing house
US - UNITED STATES
Number of pages
9
Pages from-to
23352-23360
UT code for WoS article
000488334700008
EID of the result in the Scopus database
2-s2.0-85073022167