The Photoelectrochemical Kinetics of n‐Type Cadmium Sulfide: I . The Hydroquinone System

Albery, W. John; Dias, N. L.; Wilde, C. Paul

doi:10.1149/1.2100515

Cited by 22 publications

(21 citation statements)

References 15 publications

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“…Details of many photoelectrochemical reactions in general have been successfully investigated using dynamic photoelectrochemical methods. 8 Photocurrent transient methods [9][10][11][12][13][14][15] and intensity modulated photocurrent spectroscopy (IMPS), 8,10,[16][17][18][19][20][21][22] where the working electrode is illuminated with sinusoidally modulated light, have been used for this purpose in particular. These methods can be employed to measure the rate constants of charge transfer and recombination processes occurring at the semiconductor/electrolyte interfaces.…”

Section: Introductionmentioning

confidence: 99%

Comparison of the photoelectrochemical oxidation of methanol on rutile TiO2 (001) and (100) single crystal faces studied by intensity modulated photocurrent spectroscopy

Ahmed

Oekermann

Lindner

et al. 2012

Phys. Chem. Chem. Phys.

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The photooxidation of methanol as a model substance for pollutants on rutile TiO 2 (001) and (100) surfaces was investigated using intensity modulated photocurrent spectroscopy (IMPS). The results are analyzed in view of the influence of the surface structure, the methanol concentration and the electrode potential on the rate constants of charge transfer and recombination. The obtained results have been explained with a model combining the theory of IMPS for a bulk semiconductor surface and the nature of the surface-bound intermediates (alternatively mobile or immobile OH radicals). The results indicate that water photooxidation proceeds via mobile OH radicals on both surfaces, while methanol addition gives rise to the involvement of immobile OH radicals on the (100) surface. Detailed analysis in view of the surface structures suggests that the latter observation is due to efficient electron transfer from bridging OH radicals on the (100) surface to methanol, while coupling of two of these radicals occurs in the absence of methanol, making them appear as mobile OH radicals. In the case of the (001) surface, the coupling reaction dominates even in the presence of methanol due to the smaller distance between the bridging OH radicals, leading to more efficient water oxidation, but less efficient methanol photooxidation on this surface.

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Section: Introductionmentioning

confidence: 99%

Comparison of the photoelectrochemical oxidation of methanol on rutile TiO2 (001) and (100) single crystal faces studied by intensity modulated photocurrent spectroscopy

Ahmed

Oekermann

Lindner

et al. 2012

Phys. Chem. Chem. Phys.

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show abstract

“…We have shown that there is competition between the faradaic reaction and recombination as given in the model in the Theoretical section (3). We have shown that there is competition between the faradaic reaction and recombination as given in the model in the Theoretical section (3).…”

Section: Cmentioning

confidence: 71%

“…We (1) and others (2)(3)(4)(5) have also shown how redox kinetics at this overlayer plays a crucial role in the solar-conversion efficiency of devices based on this "heterojunction-photoelectrode" concept. We (1) and others (2)(3)(4)(5) have also shown how redox kinetics at this overlayer plays a crucial role in the solar-conversion efficiency of devices based on this "heterojunction-photoelectrode" concept.…”

Section: Cmentioning

confidence: 88%

“…For the distribution exp (-x2), we write AG* = AG* -"txRT [2] and in (k) = in (k) + -/x [3] where we have introduced the useful parameter ~ which describes the dispersion (6). For the distribution exp (-x2), we write AG* = AG* -"txRT [2] and in (k) = in (k) + -/x [3] where we have introduced the useful parameter ~ which describes the dispersion (6).…”

Section: Theorymentioning

confidence: 99%

“…Applying [3] to [10] we obtain = ; exp (-~x) Substitution in [11] and [12] followed by integration over all the different contributions from the gaussian dispersion gives Applying [3] to [10] we obtain = ; exp (-~x) Substitution in [11] and [12] followed by integration over all the different contributions from the gaussian dispersion gives…”

Section: Modulated Light Studies 2487mentioning

confidence: 99%

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Modulated Light Studies of the Electrochemistry of Semiconductors: Theory and Experiment

Albery

Bartlett

Wilde

1987

J. Electrochem. Soc.

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The photoelectrochemistry of three different semiconductors, p-GaP, n-CdS, and p-InP has been studied using a sinusoidally modulated light source. The results obtained for the resulting modulated photocurrent agree well with a theoretical model based upon surface reactions governed by dispersed rate constants arising from a gaussian distribution of free energies at the electrode solution interface. The technique gives information about the amount of surface recombination occurring as well as values of the rate constants and the surface coverage of intermediates.) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 169.230.243.252 Downloaded on 2014-11-26 to IP Vol. 134, No. 10 ) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 169.230.243.252 Downloaded on 2014-11-26 to IP

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Fundamentals of Semiconductor Electrochemistry and Photoelectrochemistry

Rajeshwar

2002

Encyclopedia of Electrochemistry

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The sections in this article are Introduction and Scope Electron Energy Levels in Semiconductors and Energy Band Model The Semiconductor–Electrolyte Interface at Equilibrium The Equilibration Process The Depletion Layer Mapping of the Semiconductor Band‐edge Positions Relative to Solution Redox Levels Surface States and Other Complications Charge Transfer Processes in the Dark Current‐potential Behavior Dark Processes Mediated by Surface States or by Space Charge Layer Recombination Rate‐limiting Steps in Charge Transfer Processes in the Dark Light Absorption by the Semiconductor Electrode and Carrier Collection Light Absorption and Carrier Generation Carrier Collection Photocurrent‐potential Behavior Dynamics of Photoinduced Charge Transfer Hot Carrier Transfer Multielectron Photoprocesses Nanocrystalline Semiconductor Films and Size Quantization Introductory Remarks The Nanocrystalline Film–Electrolyte Interface and Charge Storage Behavior in the Dark Photoexcitation and Carrier Collection: Steady State Behavior Photoexcitation and Carrier Collection: Dynamic Behavior Size Quantization Chemically Modified Semiconductor–Electrolyte Interfaces Single Crystals Nanocrystalline Semiconductor Films and Composites Types of Photoelectrochemical Devices Conclusion Acknowledgments

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The Photoelectrochemical Kinetics of n‐Type Cadmium Sulfide: I . The Hydroquinone System

Cited by 22 publications

References 15 publications

Comparison of the photoelectrochemical oxidation of methanol on rutile TiO2 (001) and (100) single crystal faces studied by intensity modulated photocurrent spectroscopy

Comparison of the photoelectrochemical oxidation of methanol on rutile TiO2 (001) and (100) single crystal faces studied by intensity modulated photocurrent spectroscopy

Modulated Light Studies of the Electrochemistry of Semiconductors: Theory and Experiment

Fundamentals of Semiconductor Electrochemistry and Photoelectrochemistry

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