Exploring the Properties of Niobium Oxide Films for Electron Transport Layers in Perovskite Solar Cells.

Autor: Fernandes SL; Department of Chemistry, Federal University of São Carlos (UFSCAR), São Carlos, Brazil., Albano LGS; Department of Physics, School of Sciences, São Paulo State University (UNESP), Bauru, Brazil., Affonço LJ; Department of Physics, School of Sciences, São Paulo State University (UNESP), Bauru, Brazil., da Silva JHD; Department of Physics, School of Sciences, São Paulo State University (UNESP), Bauru, Brazil., Longo E; Department of Chemistry, Federal University of São Carlos (UFSCAR), São Carlos, Brazil., Graeff CFO; Department of Physics, School of Sciences, São Paulo State University (UNESP), Bauru, Brazil.
Jazyk: angličtina
Zdroj: Frontiers in chemistry [Front Chem] 2019 Feb 06; Vol. 7, pp. 50. Date of Electronic Publication: 2019 Feb 06 (Print Publication: 2019).
DOI: 10.3389/fchem.2019.00050
Abstrakt: In this work, niobium oxide films were deposited by reactive magnetron sputtering under different oxygen flow rate and applied as electron transport layer in perovskite solar cells. It was found that the deposition made using 3.5 sccm of oxygen flow resulted in films with better electrical properties which helped the extraction of the photogenerated electrons to the external circuit, improving the J sc and consequently the device efficiency. In addition, by photoluminescence measurements, we found a better charge transfer from perovskite to TiO 2 /niobium oxide film deposited at 3.5 sccm of oxygen flow.
Databáze: MEDLINE
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