Plasmon-induced trap filling at grain boundaries in perovskite solar cells

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F21%3APU142126" target="_blank" >RIV/00216305:26210/21:PU142126 - isvavai.cz</a>
Result on the web
<a href="https://www.nature.com/articles/s41377-021-00662-y" target="_blank" >https://www.nature.com/articles/s41377-021-00662-y</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/s41377-021-00662-y" target="_blank" >10.1038/s41377-021-00662-y</a>

Result language
angličtina
Original language name
Plasmon-induced trap filling at grain boundaries in perovskite solar cells
Original language description
The deep-level traps induced by charged defects at the grain boundaries (GBs) of polycrystalline organic-inorganic halide perovskite (OIHP) films serve as major recombination centres, which limit the device performance. Herein, we incorporate specially designed poly(3-aminothiophenol)-coated gold (Au@PAT) nanoparticles into the perovskite absorber, in order to examine the influence of plasmonic resonance on carrier dynamics in perovskite solar cells. Local changes in the photophysical properties of the OIHP films reveal that plasmon excitation could fill trap sites at the GB region through photo-brightening, whereas transient absorption spectroscopy and density functional theory calculations correlate this photo-brightening of trap states with plasmon-induced interfacial processes. As a result, the device achieved the best efficiency of 22.0% with robust operational stability. Our work provides unambiguous evidence for plasmon-induced trap occupation in OIHP and reveals that plasmonic nanostructures may be one type of efficient additives to overcome the recombination losses in perovskite solar cells and thin-film solar cells in general.
Czech name
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Czech description
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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
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
<a href="/en/project/GA20-01673S" target="_blank" >GA20-01673S: Plasmon digital holography for quantitative phase imaging below diffraction limit</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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