Designing idealised devices for bias-free solar water splitting

Abstract

The efficient conversion of solar energy into storable and distributable hydrogen is challenging, particularly in the development of cost-effective and efficient devices. As efficiency and cost are determined primarily by...

Earth-Abundant Metal Oxides for Monolithic Tandem Photoelectrochemical Water Splitting Devices: Current Trends and Perspectives

“…As well as the light-absorbing materials, the structure of a tandem device and the geometry of a PEC cell affect the transport of ions and electrical charges and therefore the performance. , In our previous work, we introduced a systematic categorization scheme for the PEC device structures by using the type of electrical contacts on light-absorbing semiconductors, which are transparent solid-state contact, opaque solid-state contact, solid–liquid junction, and recombination layer. Two solid-state contacts (transparent and opaque, respectively) are thin films of materials contacting on a semiconductor for extracting electrical charges to an outer circuit, and the transparent one allows optical transmission, but it is less conductive compared to the opaque one.…”