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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Khoshsirat, Nima
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Topics
Publications (5/5 displayed)
- 2019Efficiency enhancement of Cu2ZnSnS4 thin film solar cells by chromium dopingcitations
- 2018[Front cover] Tuning the amount of oxygen vacancies in sputter-deposited SnOx films for enhancing the performance of perovskite solar cells (ChemSusChem 18/2018)
- 2018Optimization of Mo/Cr bilayer back contacts for thin-film solar cellscitations
- 2018Tuning of oxygen vacancy in sputter-deposited SnOx films for enhancing the performance of perovskite solar cellscitations
- 2017Prospects of e-beam evaporated molybdenum oxide as a hole transport layer for perovskite solar cellscitations
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article
Tuning of oxygen vacancy in sputter-deposited SnOx films for enhancing the performance of perovskite solar cells
Abstract
This work demonstrates the effect of oxygen vacancy of SnOx thin films on the performance of perovskite solar cells. Various SnOx films with different amount of oxygen vacancy were deposited by sputtering at different substrate temperatures (25‐300 ºC). The transmittance of the films decreases from 82% to 66% with increasing the deposition temperature from 25 ºC to 300 ºC. Both XPS and ESR have confirmed that higher density of oxygen vacancies were created within the SnOx film at high substrate temperature, which caused narrowing of the SnOx bandgap from 4.1 eV (25 ºC) to 3.74 eV (250 ºC). Combined measurements of UPS and UV‐VIS spectroscopy have shown an excellent conduction band position alignment between the methylammonium lead iodide perovskite layer (3.90 eV) and the SnOx electron transport layer deposited at 250 ºC (3.92 eV). As a result, a significant enhancement of Voc from 0.82 V to 1.0 V was achieved, resulting in an increase of power conversion efficiency of the perovskite solar cells from 11% to 14%. This research demonstrates a facial approach for controlling oxygen vacancies of SnOx thin films to achieve desirable energy alignment with the perovskite absorber layer for enhanced device performance.