Organic semiconductors are being explored as retinal prosthetics with the prime attributes of bio-compatibility and conformability for seamless integration with the retina. These polymer-based artificial photoreceptor films are self-powered with light-induced signal strength sufficient to elicit neuronal firing events. The molecular aspect of these semiconductors provides wide spectral tunability. Here, we present results from a bulk heterostructure semiconductor blend with a wide spectral response range. This combination elicits clear spiking activity from a developing blind-chick embryonic retina in the subretinal configuration in response to white light. The response is largely triggered by the blue–green spectral regime rather than the red-NIR regime for the present polymer semiconductor layer attributes.
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Investigations on artificially extending the spectral range of natural vision
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December 2023
Research Article|
October 24 2023
Investigations on artificially extending the spectral range of natural vision

Special Collection:
Implantable Bioelectronics
Abhijith Krishnan;
Abhijith Krishnan
(Data curation, Formal analysis, Software, Visualization, Writing – original draft, Writing – review & editing)
1
Chemistry and Physics of Materials Unit (CPMU), JNCASR
, Bangalore, India
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C. S. Deepak;
C. S. Deepak
(Data curation, Methodology, Writing – original draft, Writing – review & editing)
1
Chemistry and Physics of Materials Unit (CPMU), JNCASR
, Bangalore, India
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K. S. Narayan
K. S. Narayan
a)
(Conceptualization, Funding acquisition, Project administration, Resources, Supervision, Validation, Writing – review & editing)
1
Chemistry and Physics of Materials Unit (CPMU), JNCASR
, Bangalore, India
2
Neuroscience Unit (NSU), JNCASR
, Bangalore, India
a)Author to whom correspondence should be addressed: [email protected]
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a)Author to whom correspondence should be addressed: [email protected]
APL Bioeng. 7, 046105 (2023)
Article history
Received:
April 30 2023
Accepted:
September 26 2023
Connected Content
A companion article has been published:
Using organic semiconductors to restore vision
Citation
Abhijith Krishnan, C. S. Deepak, K. S. Narayan; Investigations on artificially extending the spectral range of natural vision. APL Bioeng. 1 December 2023; 7 (4): 046105. https://doi.org/10.1063/5.0156463
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