Enhancing solar-to-hydrogen efficiency with an S-scheme GaTe/PtS₂ van der Waals heterojunction with high light absorption

Abstract

In order to solve the current energy and environmental problems, we designed GaTe/PtS2 van der Waals heterojunction with excellent light absorption and solar-to-hydrogen efficiency, which is an excellent photocatalytic heterojunction.

First-principles prediction of a direct Z-scheme WSe2/HfS2 van der Waals heterostructure for overall photocatalytic water decomposition

“…9(b), under the application of tensile strain, the optical absorption curve of the heterostructure exhibits a discernible red-shift. This phenomenon was also evident in other heterostructures, such as GeC/arsenene, 18 GaTe/PtS 2 , 21 and PtS 2 /g-C 3 N 4 . 71 Particularly, at a strain magnitude of −2%, the light absorption of the heterostructure attains its zenith (5.64 × 10 5 cm −1 ) in the visible light region.…”

“…16–18 This heterostructure exhibits robust redox capabilities, and its distinctive Z-scheme carrier transport pathway facilitates the accumulation of electrons and holes on distinct monolayer surfaces, thereby enhancing the photocatalytic efficiency. 19–23 Additionally, the direct Z-scheme heterostructure photocatalyst exhibits a straightforward structure, facilitating its facile synthesis. 24…”