Vanquishing CZTSSe deep defects to enhance photoelectrocatalytic water splitting

Mileny dos Santos Araujo,Hugo Leandro Sousa dos Santos,Marina Medina,Arthur Corrado Salomao,Lucia Helena Mascaro,Marcos Antonio Santana Andrade

Electrochimica Acta（2023）

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摘要

•Ag-substituted CZTSSe photocathodes were applied to produce hydrogen from water.•Adding Ag results in efficiency 6 times higher than that for the Ag-free CZTSSe.•Quasi-Fermi level splitting and band gap were obtained by AIPL.•Quasi-Fermi level pinning is related to the onset shift value.•Ag substitution vanquishes cuzn related defects, improving the H2 production.

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关键词

Bulk defects,Band tailing,Chalcogenides,Water splitting,Silver

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