Electric field-tuned band engineering and photocatalytic H 2 evolution mechanism in ZnS/SnS 2 and ZnSe/SnSe 2 heterojunctions

Key Points

• The study examines how electric fields influence bandgap properties and photocatalytic efficiency in ZnS/SnS2 and ZnSe/SnSe2 heterojunctions.
• Investigated the effects of electric fields on bandgap and Z-scheme behavior in heterojunctions.
• Analyzed efficiency changes under different field conditions.
• Optimal negative fields increased STH efficiency by 1.8× for ZnS/SnS2.
• Optimal negative fields increased STH efficiency by 3× for ZnSe/SnSe2.