Matches in SemOpenAlex for { <https://semopenalex.org/work/W4299901632> ?p ?o ?g. }
Showing items 1 to 84 of
84
with 100 items per page.
- W4299901632 endingPage "1908" @default.
- W4299901632 startingPage "1908" @default.
- W4299901632 abstract "Metal oxides such as Fe 2 O 3 , WO 3 or BiVO 4 have been extensively studied as suitable materials for photoelectrochemical (PEC) water splitting [1]. However, the water splitting performance of these materials is limited by short charge carrier lifetime, high charge carrier recombination effects and slow water oxidation kinetics [2]. These material drawbacks lead to a high sensitivity of the water splitting efficiency on the synthesis technique utilised to fabricate the metal oxide films. In this work, hematite thin films are utilised as a model system to understand the effect of variation in the synthesis process on the water splitting performance [3]. Thin films of 40-50 nm thickness are prepared by DC and reactive RF sputtering, followed by annealing at 800°C. It is observed that the DC sputtered films exhibit higher PEC performance with 40 times higher photocurrent at 1.23 V (versus RHE) and 300 mV lower onset potential, as shown in figure 1(a). From electrochemical impedance spectroscopy (EIS) measurements we find that the DC sputtered thin films exhibit faster charge transfer kinetics as shown by the higher charge transfer rate constant for the oxygen evolution reaction (figure 1(b)). Intensity modulated photocurrent spectroscopy (IMPS) and hole scavenger measurements show that DC sputtered films also have lower surface and bulk recombination effects, respectively, as compared to the reactive RF sputtered films. The variation in the PEC properties is related to the large differences observed in the morphology, surface chemistry and optical properties of the DC and RF sputtered thin films as studied by techniques such as cross-sectional TEM, SEM, XPS and UV-Vis spectroscopy. References [1] M.G. Walter, E.L. Warren, J.R. McKone, S.W. Boettcher, Q. Mi, E.A. Santori, N.S. Lewis, Chemical Reviews, 110 (2010) 6446-6473. [2] K. Rajeshwar, A. Thomas, C. Janáky, Photocatalytic Activity of Inorganic Semiconductor Surfaces: Myths, Hype, and Reality, The Journal of Physical Chemistry Letters, 6 (2015) 139-147 [3] R. Sinha, R. Lavrijsen, M. C. M. van de Sanden, A. Bieberle-Hütter, In Preparation Figure 1" @default.
- W4299901632 created "2022-10-03" @default.
- W4299901632 creator A5016283976 @default.
- W4299901632 creator A5062640052 @default.
- W4299901632 creator A5087006716 @default.
- W4299901632 creator A5089274995 @default.
- W4299901632 date "2018-04-13" @default.
- W4299901632 modified "2023-10-16" @default.
- W4299901632 title "Study of the Water Splitting Performance of Hematite Thin Films Prepared By DC and Reactive RF Sputtering" @default.
- W4299901632 doi "https://doi.org/10.1149/ma2018-01/31/1908" @default.
- W4299901632 hasPublicationYear "2018" @default.
- W4299901632 type Work @default.
- W4299901632 citedByCount "0" @default.
- W4299901632 crossrefType "journal-article" @default.
- W4299901632 hasAuthorship W4299901632A5016283976 @default.
- W4299901632 hasAuthorship W4299901632A5062640052 @default.
- W4299901632 hasAuthorship W4299901632A5087006716 @default.
- W4299901632 hasAuthorship W4299901632A5089274995 @default.
- W4299901632 hasConcept C104232198 @default.
- W4299901632 hasConcept C113196181 @default.
- W4299901632 hasConcept C147789679 @default.
- W4299901632 hasConcept C159985019 @default.
- W4299901632 hasConcept C161790260 @default.
- W4299901632 hasConcept C171250308 @default.
- W4299901632 hasConcept C17525397 @default.
- W4299901632 hasConcept C185592680 @default.
- W4299901632 hasConcept C19067145 @default.
- W4299901632 hasConcept C191897082 @default.
- W4299901632 hasConcept C192562407 @default.
- W4299901632 hasConcept C22423302 @default.
- W4299901632 hasConcept C2777855556 @default.
- W4299901632 hasConcept C2779131772 @default.
- W4299901632 hasConcept C2779845233 @default.
- W4299901632 hasConcept C2779851234 @default.
- W4299901632 hasConcept C35590869 @default.
- W4299901632 hasConcept C43617362 @default.
- W4299901632 hasConcept C49040817 @default.
- W4299901632 hasConcept C52859227 @default.
- W4299901632 hasConcept C55493867 @default.
- W4299901632 hasConcept C65165184 @default.
- W4299901632 hasConcept C7040849 @default.
- W4299901632 hasConceptScore W4299901632C104232198 @default.
- W4299901632 hasConceptScore W4299901632C113196181 @default.
- W4299901632 hasConceptScore W4299901632C147789679 @default.
- W4299901632 hasConceptScore W4299901632C159985019 @default.
- W4299901632 hasConceptScore W4299901632C161790260 @default.
- W4299901632 hasConceptScore W4299901632C171250308 @default.
- W4299901632 hasConceptScore W4299901632C17525397 @default.
- W4299901632 hasConceptScore W4299901632C185592680 @default.
- W4299901632 hasConceptScore W4299901632C19067145 @default.
- W4299901632 hasConceptScore W4299901632C191897082 @default.
- W4299901632 hasConceptScore W4299901632C192562407 @default.
- W4299901632 hasConceptScore W4299901632C22423302 @default.
- W4299901632 hasConceptScore W4299901632C2777855556 @default.
- W4299901632 hasConceptScore W4299901632C2779131772 @default.
- W4299901632 hasConceptScore W4299901632C2779845233 @default.
- W4299901632 hasConceptScore W4299901632C2779851234 @default.
- W4299901632 hasConceptScore W4299901632C35590869 @default.
- W4299901632 hasConceptScore W4299901632C43617362 @default.
- W4299901632 hasConceptScore W4299901632C49040817 @default.
- W4299901632 hasConceptScore W4299901632C52859227 @default.
- W4299901632 hasConceptScore W4299901632C55493867 @default.
- W4299901632 hasConceptScore W4299901632C65165184 @default.
- W4299901632 hasConceptScore W4299901632C7040849 @default.
- W4299901632 hasIssue "31" @default.
- W4299901632 hasLocation W42999016321 @default.
- W4299901632 hasOpenAccess W4299901632 @default.
- W4299901632 hasPrimaryLocation W42999016321 @default.
- W4299901632 hasRelatedWork W1609227237 @default.
- W4299901632 hasRelatedWork W2047776028 @default.
- W4299901632 hasRelatedWork W2142111250 @default.
- W4299901632 hasRelatedWork W2273488839 @default.
- W4299901632 hasRelatedWork W2735986295 @default.
- W4299901632 hasRelatedWork W2944717637 @default.
- W4299901632 hasRelatedWork W2973567802 @default.
- W4299901632 hasRelatedWork W3023098321 @default.
- W4299901632 hasRelatedWork W3195303915 @default.
- W4299901632 hasRelatedWork W4299901632 @default.
- W4299901632 hasVolume "MA2018-01" @default.
- W4299901632 isParatext "false" @default.
- W4299901632 isRetracted "false" @default.
- W4299901632 workType "article" @default.