Robust Hierarchically Structured Biphasic Ambipolar Oxide Photoelectrodes for Light-Driven Chemical Regulation and Switchable Logic Applications.

Bourée, Wiktor S; Prévot, Mathieu S; Jeanbourquin, Xavier A; Guijarro, Néstor; Johnson, Melissa; Formal, Florian Le; Sivula, Kevin · Adv Mater · 2016

basic_science · Level V

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Abstract

Tunable ambipolar photoelectrochemical behavior emerges from microdomains of nanostructured p-type CuFeO<sub>2</sub> and n-type Fe<sub>2</sub> O<sub>3</sub> that arise from a single facile solution-processed thin film. The switchable operation of this system is controlled by chemical, optical, or electronic inputs with a uniquely high photocurrent response (on the order of 1 mA cm<sup>-2</sup> ), suitable for robust practical application as an oxygen photoregulator.