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• W2588046793 abstract "Abstract Herein, we successfully applied a facile in-situ solid-state synthesis of conducting polymer poly(3,4-ethylenedioxythiophene) (PEDOT) as a HTM, directly on top of the perovskite layer, in conventional mesoscopic perovskite solar cells (PSCs) (n-i-p structure). The fabrication of the PEDOT film only involved a very simple in-situ solid-state polymerisation step from a monomer 2,5-dibromo-3,4-ethylenedioxythiophene (DBEDOT) made from a commercially available and cheap starting material. The ultraviolet photoelectron spectroscopy (UPS) demonstrated that the as-prepared PEDOT film possesses the highest occupied molecular orbital (HOMO) energy level of −5.5 eV, which facilitates an effective hole extraction from the perovskite absorber as confirmed by the photoluminescence measurements. Optimised PSC devices employing this polymeric HTM in combination with a low-cost vacuum-free carbon cathode (replacing the gold), show an excellent power conversion efficiency (PCE) of 17.0% measured at 100 mW cm −2 illumination (AM 1.5G), with an open-circuit voltage ( V oc ) of 1.05 V, a short-circuit current density ( J sc ) of 23.5 mA/cm 2 and a fill factor ( FF ) of 0.69, respectively. The present finding highlights the potential application of PEDOT made from solid-state polymerisation as a HTM for cost-effective and highly efficient PSCs." @default.
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• W2588046793 date "2017-02-13" @default.
• W2588046793 modified "2023-10-08" @default.
• W2588046793 title "High-Performance Regular Perovskite Solar Cells Employing Low-Cost Poly(ethylenedioxythiophene) as a Hole-Transporting Material" @default.
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• W2588046793 doi "https://doi.org/10.1038/srep42564" @default.
• W2588046793 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/5304166" @default.
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