Berlin 2024 – scientific programme
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O: Fachverband Oberflächenphysik
O 83: Focus Session: Novel Approaches to Surface Plasmon Generated Charges and Heat for Photocatalysis II (joint session O/CPP)
O 83.3: Talk
Thursday, March 21, 2024, 11:15–11:30, MA 141
Advancing Plasmonic Charge Transfer for Photocatalysis: Bottom-Up Strategies in Energy Harvesting and Optoelectronics — •Swagato Sarkar1 and Tobias A. F. Koenig1,2 — 1Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, 01069 Dresden — 2Center for Advancing Electronics Dresden (cfaed), Technische Universität Dresden, Helmholtzstraße 18, 01069 Dresden
Our study comprehensively explores bottom-up techniques for plasmonic charge transfer, focusing on their collective applications in energy harvesting. Extending the concepts of plasmon-photon hybridization to self-assembled plasmonic nanoparticle chains or deposited metallic nanobars introduces a scalable approach for charge injection to adjacent semiconductor thin films, thus facilitating cost-effective photodetection [Sarkar et al., Adv. Func. Mat., 2021, 2011099]. The fusion of soft-lithography with template-assisted self-assembly further enhances large-scale bottom-up strategies, providing a cost-efficient printing of plasmonic metasurfaces for superior charge transfer and amplified the photocatalytic processes [Sarkar et al., Adv. Func. Mat., 2021, 2105054]. Complementing these studies, introducing a novel interconnected metal-semiconductor grating design showcases enhanced current modulation, allowing for efficient photosensor development by leveraging plasmon-mediated hot electrons [Sarkar et al., Adv. Func. Mat.,2023, 2210172]. Thus, our unified approach to bottom-up techniques in plasmonic charge transfer advances the field and promises efficient and scalable solutions for miniaturized optoelectronic devices.
Keywords: Plasmonic charge transfer; Bottom-up techniques; Photodetection; Photocatalysis; Plasmon-Photon coupling