Yazar "Mackowski, Sebastian" seçeneğine göre listele

Listeleniyor 1 - 2 / 2
  • [ X ]
    Öğe
    Bimodal functionality of highly conductive nanostructured silver film towards improved performance of photosystem I-based graphene photocathode
    (Elsevier Science Sa, 2025) Szalkowski, Marcin; Kiliszek, Malgorzata; Harputlu, Ersan; Izzo, Miriam; Unlu, C. Gokhan; Mackowski, Sebastian; Ocakoglu, Kasim
    We present the novel design of photosystem I (PSI)-based biosolar cell, whereby conductive transparent electrode materials, such as ITO or FTO, are replaced with glass covered with silver island film. This nanostructured metallic layer combines high electric conductance with enhancing the absorption efficiency of the PSI biocatalyst via the plasmonic effect. We demonstrate strong enhancement of the photocurrent generated in the biohybrid electrode composed of oriented layers of PSI reaction centers due to plasmonic interactions of the PSI fluorophores and redox centres with the conductive silver island film.
  • [ X ]
    Öğe
    Plasmonic enhancement of photocurrent generation in a photosystem I-based hybrid electrode
    (Royal Soc Chemistry, 2020) Szalkowski, Marcin; Harputlu, Ersan; Kiliszek, Malgorzata; Unlu, C. Gokhan; Mackowski, Sebastian; Ocakoglu, Kasim; Kargul, Joanna
    We experimentally demonstrate that oriented assembly of red algal photosystem I (PSI) reaction centers on a plasmonically active Silver Island Film (SIF) leads to strong enhancement of both the fluorescence intensity and photocurrent generated upon illumination. PSI complexes were specifically attached to a monolayer of graphene deposited on the SIF layer. The results of comprehensive fluorescence microscopy point to the critical role of the SIF layer in enhancing the optical response of PSI, as we observe increased emission intensity. Hence, importantly, the strong increase of photocurrent generation demonstrated for the biohybrid electrodes can be directly associated with the plasmonic enhancement of the optical and electrochemical functionalities of PSI. The results also indicate that the graphene layer is not diminishing the influence of the plasmonic excitations in SIF on the absorption and emission of PSI.