Type: Article

Photoelectrochemical water splitting with dual-photoelectrode tandem and parallel configurations: Enhancing light harvesting and carrier collection efficiencies

Journal: Surfaces and Interfaces (24680230)Year: June 2023Volume: 38Issue:

Keshavarzi R.^a Mousavian M. Omrani M.Mirkhani V.^a Afzali N. Mesa C.A.Mohammadpoor Baltork I.^a Gimenez S.

a :University of Isfahan - IRAN(IR) - Isfahan

DOI:10.1016/j.surfin.2023.102813Language: English

Abstract

Photoelectrochemical (PEC) water splitting stands out as one of the most promising technologies to store solar energy into chemical bonds and decarbonize industry and transport. In the present study, we develop heterostructured BiVO4/WO3 and TiO2/PANi photoanodes for water oxidation, aiming at maximizing their spectral activity and their light harvesting efficiency, rationalized by a detailed optical modeling of the PEC cell. Furthermore, we implement tandem and parallel dual-photoelectrode configurations to enhance the collection efficiency. Photocurrents of 1.68 and 2.29 mA/cm2 at 1.23 V vs RHE were obtained for tandem and parallel configurations, respectively, demonstrating an enhancement factor 4–6 for Tandem and Parallel cells. © 2023 Elsevier B.V.