Demonstration of Electrochemical Generation of Solution-Phase Hot Electrons at Oxide-Covered Tantalum Electrodes by Direct Electrogenerated Chemiluminescence

Sung, Yung Eun; Gaillard, F.; Bard, Allen J.

doi:10.1021/jp981985y

Cited by 38 publications

(32 citation statements)

References 37 publications

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“…311 ECL is also used to provide experimental evidence for the production of hot electrons. 314 Hot electrons have been studied in metals, semiconductors, and liquids. In a semiconductor, hot electrons are those with energies appreciably higher than the conduction band edge.…”

Section: Thermodynamic and Mechanistic Studymentioning

confidence: 99%

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Applications and trends in electrochemiluminescence

2010

Chem. Soc. Rev.

992

666

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Electrochemiluminescence (ECL) is chemiluminescence triggered by electrochemical techniques. More than 150 ECL assays with remarkably high sensitivity and extremely wide dynamic range are currently available, and accounts for hundreds of millions of dollars in sales per year. The recent development of ECL is particularly rapid. After a brief introduction to ECL, this critical review presents the active and/or emerging areas of ECL research as well as new applications and phenomena of ECL, such as light-emitting electrochemical cell, wireless electrochemical microarray using ECL as photonic reporter, high throughput analysis, aptasensors, immunoassays and DNA analysis, ECL of nanoclusters and carbon nanomaterials, ECL imaging techniques, scanning ECL microscopy, colorimetric ECL sensor, surface plasmon-coupled ECL, electrostatic chemiluminescence, soliton-like ECL waves, ECL investigation of molecular interaction, and single molecule detection. Finally, some perspectives on this rapidly developing field are discussed (322 references).

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Section: Thermodynamic and Mechanistic Studymentioning

confidence: 99%

“…The generation of ECL by the reduction of the oxidized forms of thianthrene and a heptamethine cyanine dye at an oxide-covered tantalum electrode confirmed the occurrence of the hot electron injection. 314…”

Section: Thermodynamic and Mechanistic Studymentioning

confidence: 99%

Applications and trends in electrochemiluminescence

2010

Chem. Soc. Rev.

992

666

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“…Under certain circumstances (e.g. quantum-well electrodes, oxide film-covered metallic electrodes), it has been claimed that hot carrier transfer can indeed be sustained across the semiconductor-electrolyte interface [7,172,173].…”

Section: Hot Carrier Transfermentioning

confidence: 99%

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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“…Yellowish coloration of laser-treated areas is also observed in the case of Ta target, though its origin is not clear. The oxide Ta 2 O 5 that might form under laser exposure has large bandgap energy (4.0 eV) [7] and is colorless. The position of the plasmon resonance of Ta nanoparticles is around 670 nm, which corresponds to the additional green color of the surface.…”

Section: Resultsmentioning

confidence: 99%