Passivation of bulk defects in halide perovskites thin films by plasma treatment
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F24%3A00604168" target="_blank" >RIV/68378271:_____/24:00604168 - isvavai.cz</a>
Result on the web
<a href="https://www.nanoge.org/proceedings/HOPV24/65c507aba1f2da7226919203" target="_blank" >https://www.nanoge.org/proceedings/HOPV24/65c507aba1f2da7226919203</a>
DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Passivation of bulk defects in halide perovskites thin films by plasma treatment
Original language description
The recombination of electrons and holes at defect states in perovskite absorbers limits the power conversion efficiency (PCE) of perovskite solar cells. Defects primarily form at grain boundaries and surfaces, necessitating selective passivation. Removing thin surface layers via mechanical or laser polishing has been shown to enhance PCE. In this study, we investigated the effect of diffuse coplanar surface barrier discharge (DCSBD) plasma treatment on perovskite thin films. Using in-situ photoluminescence (PL) spectroscopy, we found that plasma exposure in a nitrogen atmosphere initially decreased PL intensity due to surface defects. However, as oxygen was removed from the film, PL intensity increased, indicating reduced defect density. Prolonged exposure beyond complete oxygen removal negatively impacted the film. DCSBD plasma treatment shows potential as a preparatory step before passivation layer deposition and is compatible with large-scale production due to its established industrial use.
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
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)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů