Photovoltaic organic interface for neuronal stimulation in the near-infrared
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Abstract Organic materials, such as conjugated polymers, are attractive building blocks for bioelectronic interfaces. In particular, organic semiconductors show excellent performance in light-mediated excitation and silencing of neuronal cells and tissues. However, the main challenges of these organic photovoltaic interfaces compared to inorganic prostheses are the limited adhesion of conjugated polymers in aqueous environments and the exploitation of materials responsive in the visible spectrum. Here, we show a photovoltaic organic interface optimized for neuronal stimulation in the near-infrared spectrum. We adjusted the organic materials by chemical modification in order to improve the adhesion in an aqueous environment and to modulate the photoelectrical stimulation efficiency. As proof-of-principle, we tested this interface on explanted degenerated mice retinas, thus providing results on the efficiency and reliability of the device as an implant for neural stimulation.
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POLYRETINA is a high-density wide-field epiretinal prosthesis containing 10,498 photovoltaic pixels distributed over an active area of approximately 43°.
“POLYRETINA is a high-density wide-field epiretinal prosthesis containing 10 498 photovoltaic pixels distributed over an active area of approximately 43 • [38,39,131,132].”
From Advances in visual prostheses: engineering and biological challenges (2022) · cites this paper as [131]
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References 62 · Cited by 63
- Authors
- Airaghi Leccardi, M. J. I., Chenais, N. A. L., Ferlauto, L., Kawecki, M., Zollinger, E. G., & Ghezzi, D.
- Affiliations
- École Polytechnique Fédérale de Lausanne (CH)
- University of Basel (CH)
- Corresponding author
- Ghezzi, Diego
- Venue
- Communications Materials
- Published
- 2020-05-01
- Volume
- 1
- Issue
- 1
- ISSN
- 2662-4443 (ISSN-L)
- OpenAlex
- W3021023113
- Cited by
- 63
- References
- 62
- Citations by year
- 2026: 3 · 2025: 10 · 2024: 10 · 2023: 14 · 2022: 8 · 2021: 15 · 2020: 3
- FWCI
- 4.60
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- Communications Materials (publishedVersion, cc-by)
- DORA Empa (Swiss Federal Laboratories for Materials Science and Technology (Empa)) (submittedVersion, cc-by)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion, cc-by-nc-nd)
- Funders
- Gebert Rüf Stiftung (GRS-035/17)
- Velux Stiftung (1102)
- Topics
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neural Engineering
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Organic Electronics and Photovoltaics
- Physical Sciences › Materials Science › Polymers and Plastics › Conducting polymers and applications
- Keywords
- neurostimulation, near-infrared light, conjugated polymers, organic semiconductors, bioelectronic interfaces, chemical modification, retinal prosthesis
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