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| Hauptseite > Publikationsdatenbank > Direct Mapping of Band Positions in Doped and Undoped Hematite during Photoelectrochemical Water Splitting > print |
| Hauptseite > Publikationsdatenbank > Direct Mapping of Band Positions in Doped and Undoped Hematite during Photoelectrochemical Water Splitting > print |
| 001 | 842074 | ||
| 005 | 20210129232201.0 | ||
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| 100 | 1 | _ | |a Shavorskiy, Andrey |0 P:(DE-HGF)0 |b 0 |
| 245 | _ | _ | |a Direct Mapping of Band Positions in Doped and Undoped Hematite during Photoelectrochemical Water Splitting |
| 260 | _ | _ | |a Washington, DC |c 2017 |b ACS |
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| 520 | _ | _ | |a Photoelectrochemical water splitting is a promising pathway for the direct conversion of renewable solar energy to easy to store and use chemical energy. The performance of a photoelectrochemical device is determined in large part by the heterogeneous interface between the photoanode and the electrolyte, which we here characterize directly under operating conditions using interface-specific probes. Utilizing X-ray photoelectron spectroscopy as a noncontact probe of local electrical potentials, we demonstrate direct measurements of the band alignment at the semiconductor/electrolyte interface of an operating hematite/KOH photoelectrochemical cell as a function of solar illumination, applied potential, and doping. We provide evidence for the absence of in-gap states in this system, which is contrary to previous measurements using indirect methods, and give a comprehensive description of shifts in the band positions and limiting processes during the photoelectrochemical reaction. |
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| 773 | _ | _ | |a 10.1021/acs.jpclett.7b02548 |g Vol. 8, no. 22, p. 5579 - 5586 |0 PERI:(DE-600)2522838-9 |n 22 |p 5579 - 5586 |t The @journal of physical chemistry letters |v 8 |y 2017 |x 1948-7185 |
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