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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 83.9: Talk

Thursday, March 21, 2024, 12:45–13:00, MA 141

Strong Light-Matter Interaction to Control Plasmonic Catalysis — •Christian Schäfer, Jakub Fojt, and Paul Erhart — Department of Physics, Chalmers University of Technology, 412 96 Göteborg, Sweden

Optically excited nanoplasmonic particles are efficient catalysts, for which an intricate interplay of internal carrier generation and heat drives the reactions of molecules in close proximity. Here, we establish a connection between optical strong coupling between resonator structures and the nanoplasmonic plus molecule system to non-intrusively control the optical excitation energy. Based on a theoretical description from first principles (1,2,3), we demonstrate that this non-intrusive control can be used to optimize carrier injection into the molecule and thus improves plasmonic catalysis. We discuss current limitations, future development, and the prospects of strong coupling modified plasmonic catalysis.

[1] C. Schäfer and G. Johansson, PRL 128, 156402 (2022). [2] C. Schäfer, J. Phys. Chem. Lett. 2022, 13, 6905-6911. [3] C. Schäfer, J. Fojt, P. Erhart, in progress (2024).

Keywords: Strong coupling; Plasmonic Catalysis; hot carrier; Ab initio QED; QEDFT