Efficient photocapacitors via ternary hybrid photovoltaic optimization for photostimulation of neurons.

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ID: 264828
2020
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Abstract
Optoelectronic photoelectrodes based on capacitive charge-transfer offer an attractive route to develop safe and effective neuromodulators. Here, we demonstrate efficient optoelectronic photoelectrodes that are based on the incorporation of quantum dots (QDs) into poly(3-hexylthiophene-2,5-diyl) (P3HT) and [6,6]-Phenyl-C61-butyric acid methyl ester (PCBM) bulk heterojunction. We control the performance of the photoelectrode by the blend ratio, thickness, and nanomorphology of the ternary bulk heterojunction. The optimization led to a photocapacitor that has a photovoltage of 450 mV under a light intensity level of 20 mW.cm and a responsivity of 99 mA/W corresponding to the most light-sensitive organic photoelectrode reported to date. The photocapacitor can facilitate action potential generation by hippocampal neurons via burst waveforms at an intensity level of 20 mW.cm. Therefore, the results point to an alternative direction in the engineering of safe and ultra-light-sensitive neural interfaces.
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srivastava2020efficientbiomedical Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Srivastava, Shashi Bhushan;Melikov, Rustamzhon;Yildiz, Erdost;Han, Mertcan;Sahin, Afsun;Nizamoglu, Sedat;
Journal Biomedical optics express
Year 2020
DOI
10.1364/BOE.396068
URL
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