Will Solar-Driven Water-Splitting Devices See the Light of Day?

TLDR

Solar‑driven water‑splitting research has advanced significantly, yet further basic studies are required before commercially viable prototype devices can be realized. This perspective outlines the key design constraints and critical research areas that must be addressed to achieve commercial viability of solar‑driven water‑splitting devices. The authors review the currently available device components suitable for demonstration systems and prototypes in solar‑driven water splitting.

Abstract

Through decades of sustained effort, researchers have made substantial progress on developing technologies for solar-driven water splitting. Nevertheless, more basic research is needed before prototype devices with a chance for commercial success can be demonstrated. In this Perspective, we summarize the major design constraints that motivate continued research in the field of solar-driven water splitting. Additionally, we discuss key device components that are now available for use in demonstration systems and prototypes. Finally, we highlight research areas where breakthroughs will be critical for continued progress toward commercial viability for solar-driven water-splitting devices.