Affiliation:
1. Univ Rennes CNRS ISCR (Institut des Sciences Chimiques de Rennes)‐UMR6226 Rennes F‐35000 France
2. Univ Rennes INSA Rennes CNRS Institut FOTON‐UMR 6082 Rennes F‐35000 France
3. University of Bordeaux INP ISM UMR CNRS 5255 Bordeaux 33607 France
4. Institute of Energy and Climate Research Fundamental Electrochemistry (IEK‐9) Forschungszentrum Jülich GmbH 52425 Jülich Germany
Abstract
AbstractElectrochemiluminescence (ECL) is the generation of light induced by an electrochemical reaction, driven by electricity. Here, an all‐optical ECL (AO–ECL) system is developped, which triggers ECL by the illumination of electrically autonomous “integrated” photoelectrochemical devices immersed in the electrolyte. Because these systems are made using small and cheap devices, they can be easily prepared and readily used by any laboratories. They are based on commercially available p‐i‐n Si photodiodes (≈1 € unit−1), coupled with well‐established ECL‐active and catalytic materials, directly coated onto the component leads by simple and fast wet processes. Here, a Pt coating (known for its high activity for reduction reactions) and carbon paint (known for its optimal ECL emission properties) are deposited at cathode and anode leads, respectively. In addition to its optimized light absorption properties, using the commercial p‐i‐n Si photodiode eliminates the need for a complicated manufacturing process. It is shown that the device can emit AO–ECL by illumination with polychromatic (simulated sunlight) or monochromatic (near IR) light sources to produce visible photons (425 nm) that can be easily observed by the naked eye or recorded with a smartphone camera. These low‐cost off‐grid AO‐ECL devices open broad opportunities for remote photodetection and portable bioanalytical tools.
Funder
Agence Nationale de la Recherche
Subject
Biomaterials,Biotechnology,General Materials Science,General Chemistry
Cited by
1 articles.
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