Plasmonic enhancement of photocurrent generation in a photosystem I-based hybrid electrode
| Autor: | Marcin Szalkowski, Sebastian Mackowski, Małgorzata Kiliszek, Joanna Kargul, Ersan Harputlu, Kasim Ocakoglu, Dorota Kowalska, C. Gokhan Unlu |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Photocurrents Oriented assembly Physics::Optics Photosystem I Fluorescence law.invention law Monolayer Materials Chemistry Absorption (electromagnetic radiation) Plasmon Fluorescence microscopy Photocurrent Emission intensity Graphene business.industry Absorption and emissions Silver island films Hybrid electrodes Fluorescence intensities General Chemistry Electrochemical electrodes Strong enhancement Electrode Plasmonics Optoelectronics business Layer (electronics) Photocurrent generations |
| Zdroj: | Journal of Materials Chemistry C. 8:5807-5814 |
| ISSN: | 2050-7534 2050-7526 |
| DOI: | 10.1039/c9tc06983f |
| Popis: | 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. © The Royal Society of Chemistry 2020. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|