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Modulating Carrier ...
Modulating Carrier Kinetics in BiVO4 Photoanodes through Molecular Co4O4 Cubane Layers
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- Chen, Hang (författare)
- Univ Zurich, Dept Chem, CH-8057 Zurich, Switzerland.
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- Li, Jingguo (författare)
- Uppsala universitet,Syntetisk molekylär kemi,Univ Zurich, Dept Chem, CH-8057 Zurich, Switzerland
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- Meng, Lingshen (författare)
- Univ Zurich, Dept Chem, CH-8057 Zurich, Switzerland.
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- Bae, Sanghyun (författare)
- Univ Zurich, Dept Chem, CH-8057 Zurich, Switzerland.
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- Erni, Rolf (författare)
- Empa Swiss Fed Labs Mat Sci & Technol, Electron Microscopy Ctr, CH-8600 Dubendorf, Switzerland.
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- Abbott, Daniel F. (författare)
- Swiss Fed Inst Technol, Dept Chem & Appl Biosci, CH-8093 Zurich, Switzerland.
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- Li, Shangkun (författare)
- Univ Zurich, Dept Chem, CH-8057 Zurich, Switzerland.
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- Triana, Carlos A. (författare)
- Univ Zurich, Dept Chem, CH-8057 Zurich, Switzerland.
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- Mougel, Victor (författare)
- Swiss Fed Inst Technol, Dept Chem & Appl Biosci, CH-8093 Zurich, Switzerland.
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- Patzke, Greta R. (författare)
- Univ Zurich, Dept Chem, CH-8057 Zurich, Switzerland.
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Univ Zurich, Dept Chem, CH-8057 Zurich, Switzerland Syntetisk molekylär kemi (creator_code:org_t)
- Wiley-VCH Verlagsgesellschaft, 2023
- 2023
- Engelska.
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Ingår i: Advanced Functional Materials. - : Wiley-VCH Verlagsgesellschaft. - 1616-301X .- 1616-3028. ; 33:48
- Relaterad länk:
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https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Understanding the role and immobilization of molecular catalysts on photoelectrodes is essential to use their full potential for efficient solar fuel generation. Here, a CoII4O4 cubane with proven catalytic performance and an active H2O─Co2(OR)2─OH2 edge-site moiety is immobilized on BiVO4 photoanodes through a versatile layer-by-layer assembly strategy. This delivers a photocurrent of 3.3 mA cm−2 at 1.23 VRHE and prolonged stability. Tuning the thickness of the Co4O4 layer has remarkable effects on photocurrents, dynamic open circuit potentials, and charge carrier behavior. Comprehensive-time and frequency-dependent perturbation techniques are employed to investigate carrier kinetics in transient and pseudo-steady-state operando conditions. It is revealed that the Co4O4 layer can prolong carrier lifetime, unblock kinetic limitations at the interface by suppressing recombination, and enhance charge transfer. Additionally, its flexible roles are identified as passivation/hole trapping/catalytic layer at respective lower/moderate/higher potentials. These competing functions are under dynamic equilibrium, which fundamentally defines the observed photocurrent trends.
Ämnesord
- NATURVETENSKAP -- Kemi -- Annan kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Other Chemistry Topics (hsv//eng)
Nyckelord
- charge transfer processes
- electrochemical impedance
- layer-by-layer assembly
- molecular catalysts
- PEC water oxidation
- photoanodes
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Till lärosätets databas
- Av författaren/redakt...
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Chen, Hang
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Li, Jingguo
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Meng, Lingshen
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Bae, Sanghyun
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Erni, Rolf
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Abbott, Daniel F ...
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visa fler...
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Li, Shangkun
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Triana, Carlos A ...
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Mougel, Victor
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Patzke, Greta R.
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visa färre...
- Om ämnet
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- NATURVETENSKAP
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NATURVETENSKAP
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och Kemi
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och Annan kemi
- Artiklar i publikationen
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Advanced Functio ...
- Av lärosätet
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Uppsala universitet