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Title: New thiophene imines acting as hole transporting materials in photovoltaic devices
Authors: Pająk, Agnieszka Katarzyna
Gnida, Paweł
Kotowicz, Sonia
Małecki, Jan Grzegorz
Libera, Marcin
Bednarczyk, Katarzyna
Schab-Balcerzak, Ewa
Keywords: fotowoltaika; photovoltaic; energy; batteries; thiophene; tiofen (tiofuran)
Issue Date: 2020
Citation: "Energy & Fuels" 2020 (article ASAP)
Abstract: Five new unsymmetric thiophene imines end-capped with an electron-donating amine (−NH2) group were obtained using a simple synthetic route, that is, the melt condensation of 2,5-diamino-thiophene-3,4-dicarboxylic acid diethyl ester with commercially available aldehydes. Their thermal stability and electrochemical and photophysical (absorption (UV−vis) and photoluminescence (PL)) properties were examined and density functional theory calculations were performed. The imines were thermally stable above 200 °C. They underwent reduction and oxidation processes and exhibited an energy band gap electrochemically estimated between 1.81 and 2.44 eV. They absorbed radiation from the UV and visible range to 480 nm and showed weak light emission. These compounds were investigated as hole transporting materials in solar cells with the structure FTO/b-TiO2/m-TiO2/perovskite/imine/Au. The highest photoelectric conversion efficiency was observed for compounds with a morpholine derivative substituent.
Description: ASAP Article - Articles ASAP (as soon as publishable) are posted online and available to view immediately after technical editing, formatting for publication, and author proofing.
DOI: 10.1021/acs.energyfuels.0c01698
ISSN: 1520-5029
Appears in Collections:Artykuły (WNŚiT)

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