High carrier mobility along the [111] orientation in Cu2O photoelectrodes

Pan, Linfeng; Dai, Linjie; Burton, Oliver J.; Chen, Lu; Andrei, Virgil; Zhang, Youcheng; Ren, Dan; Cheng, Jinshui; Wu, Linxiao; Frohna, Kyle; Abfalterer, Anna; Yang, Terry Chien‐Jen; Niu, Wenzhe; Xia, Meng; Hofmann, Stephan; Dyson, Paul J.; Reisner, Erwin; Sirringhaus, Henning; Luo, Jingshan; Hagfeldt, Anders; Grätzel, Michaël; Stranks, Samuel D.

doi:10.1038/s41586-024-07273-8

articleNatureApr 24, 2024HYBRID OA

High carrier mobility along the [111] orientation in Cu2O photoelectrodes

LPLinfeng Pan LDLinjie Dai OJOliver J. Burton LCLu Chen VAVirgil Andrei

University of Cambridge · École Polytechnique Fédérale de Lausanne · +3 more institutions

PubMed

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Abstract

Abstract Solar fuels offer a promising approach to provide sustainable fuels by harnessing sunlight 1,2 . Following a decade of advancement, Cu 2 O photocathodes are capable of delivering a performance comparable to that of photoelectrodes with established photovoltaic materials 3–5 . However, considerable bulk charge carrier recombination that is poorly understood still limits further advances in performance 6 . Here we demonstrate performance of Cu 2 O photocathodes beyond the state-of-the-art by exploiting a new conceptual understanding of carrier recombination and transport in single-crystal Cu 2 O thin films. Using ambient liquid-phase epitaxy, we present a new method to grow single-crystal Cu 2 O samples…

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Topics & keywords

Topics

Keywords

Photocathode
Materials science
Optoelectronics
Charge carrier
Anisotropy
Heterojunction
Photovoltaics
Electron mobility

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