Cathodic photoelectrochemical bioanalysis

Photoelectrochemical (PEC) bioanalysis is a newly developed exquisite methodology for innovative biomolecular detection. Photocathodes made by p-type semiconductors have different photoelectric properties from that of n-type semiconductors-based photoanodes. Due to their obvious advantages and potentials, the integration of PEC bioanalysis and photocathodes has opened almost unlimited possibilities for elegant cathodic PEC bioanalysis. Currently, the impetus for advanced cathodic PEC bioanalysis has grown tremendously as demonstrated by increased research papers. Using illustrative examples, this review discusses specifically on this topic, with the aim to cover the basic concept, major signaling strategies, the state of the art in this field, and the future prospects based on our own opinions. (C) 2019 Elsevier B.V. All rights reserved.