Forster, Mark 
ORCID: 0000-0002-8077-7690, Cheung, Daniel WF ORCID: 0000-0001-5651-7525, Gardner, Adrian M ORCID: 0000-0002-2423-8799 and Cowan, Alexander J ORCID: 0000-0001-9032-3548
(2020)
Potential and pitfalls: On the use of transient absorption spectroscopy for <i>in situ</i> and operando studies of photoelectrodes.
JOURNAL OF CHEMICAL PHYSICS, 153 (15).
150901-.
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TAS perspective final.pdf - Author Accepted Manuscript Download (1MB) | Preview |
Abstract
Here, we discuss the application, advantages, and potential pitfalls of using transient UV/Vis (ultraviolet-visible) absorption spectroscopy to study photoelectrodes for water splitting. We revisit one of the most commonly studied water oxidation photoanodes (α-Fe<sub>2</sub>O<sub>3-x</sub>) to provide commentary and guidelines on experiment design and data analysis for transient absorption (TA) studies of photoelectrodes within a photoelectrochemical cell. We also assess the applicability of such in situ TA studies to understand photoelectrodes under operating conditions. A major limitation is that most, if not all, past in situ TA studies have been carried out using only pulsed light sources to generate carriers, with the electrode held in the dark at other times, which is shown to be a poor model for operating conditions. However, with a simple modification of existing TA experiments, a simple operando TA measurement is reported.
| Item Type: | Article |
|---|---|
| Depositing User: | Symplectic Admin |
| Date Deposited: | 05 Oct 2020 07:59 |
| Last Modified: | 10 Oct 2023 14:27 |
| DOI: | 10.1063/5.0022138 |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3103346 |
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