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Spatial balance of photogenerated charge carriers in active layers of polymer solar cells

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    0574217 - FZÚ 2024 RIV CH eng J - Článek v odborném periodiku
    Im, C. - Kang, S.W. - Choi, J. Y. - An, J. - Mičová, J. - Remeš, Zdeněk
    Spatial balance of photogenerated charge carriers in active layers of polymer solar cells.
    Molecules. Roč. 28, č. 15 (2023), č. článku 5823. E-ISSN 1420-3049
    Institucionální podpora: RVO:68378271
    Klíčová slova: polymeric photovoltaics * non-fullerene acceptors * internal absorption * internal quantum efficiency * transfer matrix method * spatial balance * charge carrier distribution
    Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
    Impakt faktor: 4.6, rok: 2022
    Způsob publikování: Open access

    Bulk heterojunction polymer solar cells (PSC) blended with non-fullerene -type aceptors (NFA) possess good solar power conversion efficiency and compatibility with flexible electronics rendering them good candidates for mobile photovoltaic applications. However, their internal absorption performance and mechanism are yet to be fully elucidated because of their complicated interference effects caused by their multilayer device structure. The transfer matrix method (TMM) is ideal for analyzing complex optical electric fields by considering multilayer interference effects. In this study an active (AL) thickness-dependent TMM was used to obtain accurate information on the photon-captur ing mechanisms of NFA-based PSCs, for comparison with experimental results. Devices with AL thicknesses of 40–350 nm were prepared, and the AL-thickness-dependent device parameters with incident photon -to -current efficiency spectra were compared with calculated internal absorption spectra.
    Trvalý link: https://hdl.handle.net/11104/0344562

     
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