Photoprotein as an internal light source for a photoelectrochemical cell employing a semiconducting oxide electrode

Kai KAMADA; Keiichiro TAKEYAMA; Eri YOSHIDA; Nobuaki SOH

doi:10.2109/jcersj2.16270

This article has now been updated. Please use the final version.

Photoprotein as an internal light source for a photoelectrochemical cell employing a semiconducting oxide electrode

Kai KAMADA, Keiichiro TAKEYAMA, Eri YOSHIDA, Nobuaki SOH

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Keywords: Photoelectrochemical cell, Photoprotein, Bioluminescence, Oxide semiconductor, Bandgap excitation

JOURNAL OPEN ACCESS Advance online publication

Article ID: 16270

DOI https://doi.org/10.2109/jcersj2.16270

The final version of this article is now available: Vol. 125 (2017), No. 4 pp. 190-192

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Abstract

Inorganic-bio nanocomposites combining photoproteins (aequorin, AEQ) with a Pt-doped α-Fe₂O₃ (Pt-α-Fe₂O₃) thin film could induce a photoelectrochemical reaction without an external light source. Blue emission originated from Ca²⁺ binding to AEQ excited the n-type semiconducting Pt-α-Fe₂O₃ under an anodic bias, then an anodic photocurrent was clearly observed in a basic solution.

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