Demonstrates improved solar-to-hydrogen efficiency in photocathodes using composite electron transport layers, indicating scalability for solar fuel production.
and a high half-cell solar-to-hydrogen efficiency (HC-STH) of 7.02%. This study demonstrates that fine control of composite ETLs is a powerful strategy to unlock the potential of CZTS and related earth-abundant absorbers for scalable solar fuel production.
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Ren et al. (2026) studied this question.
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