A solid-state integrated photo-supercapacitor based on ZnO nanorod arrays decorated with Ag 2 S quantum dots as the photoanode and a PEDOT charge storage counter-electrode

• Published in: RSC advances Vol. 10; no. 10; pp. 5712 - 5721
• Main Authors: Solís-Cortés, D, Navarrete-Astorga, E, Schrebler, R, Peinado-Pérez, J J, Martín, F, Ramos-Barrado, J R, Dalchiele, E A
• Format: Journal Article
• Language: English
• Published: England 06-02-2020
• ISSN: 2046-2069; 2046-2069
• DOI: 10.1039/C9RA10635A

A planar solid-state photocapacitor with two electrodes has been prepared for the first time using a passivated film of ZnS with Ag
S quantum dots deposited on ZnO nanorods, which were electrochemically grown on ZnO seed layers, as the photoanode. The supercapacitor part is composed of a electrodeposited poly(3,4-ethylene-dioxythiophene) PEDOT film as the counter-electrode and an ionic liquid-based electrolyte between them deposited by the dip coating method. The different nanostructures and electrodes were morphologically and structurally characterized, and the device was electrochemically characterized and could reach a potential of 0.33 V during photocharge and a storage efficiency of 6.83%.