ArticleThe journal of physical chemistry. C, Nanomaterials and interfaces2021
Unraveling the Mechanisms of Beneficial Cu-Doping of NiO-Based Photocathodes.
Article in The journal of physical chemistry. C, Nanomaterials and interfaces, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Boosting COChemical science · 2026Article
- Effects of Nuclear Motion on the Photoinduced Interfacial Charge Transfer Dynamics at a NiO/P1 Photocathode.The journal of physical chemistry. C, Nanomaterials and interfaces · 2025Article
- Limiting Molecular Twisting: Upgrading a Donor-Acceptor Dye to Drive HAdvanced science (Weinheim, Baden-Wurttemberg, Germany) · 2024Article
- Rotaxane-Functionalized Dyes for Charge-Rectification in p-Type Photoelectrochemical Devices.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2024Article
- Photophysical Study on the Effect of the External Potential on NiO-Based Photocathodes.ACS applied materials & interfaces · 2024Article
- Charge Recombination Deceleration by Lateral Transfer of Electrons in Dye-Sensitized NiO Photocathode.Journal of the American Chemical Society · 2023Article
- Dual Role of Surface Hydroxyl Groups in the Photodynamics and Performance of NiO-Based Photocathodes.Journal of the American Chemical Society · 2022Article
Corrections and comments
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Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Dye-sensitized photoelectrochemical (DSPEC) water splitting is an attractive approach to convert and store solar energy into chemical bonds. However, the solar conversion efficiency of a DSPEC cell is typically low due to a poor performance of the photocathode. Here, we demonstrate that Cu-doping improves the performance of a functionalized NiO-based photocathode significantly. Femtosecond transient absorption experiments show longer-lived photoinduced charge separation for the Cu:NiO-based photocathode relative to the undoped analogue. We present a photophysical model that distinguishes between surface and bulk charge recombination, with the first process (∼10 ps) occurring more than 1 order of magnitude faster than the latter. The longer-lived photoinduced charge separation in the Cu:NiO-based photocathode likely originates from less dominant surface recombination and an increased probability for holes to escape into the bulk and to be transported to the electrical contact of the photocathode. Cu-doping of NiO shows promise to suppress detrimental surface charge recombination and to realize more efficient photocathodes.
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Registered trials
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