Effects of the Ligand Chain Length: A Potential Dependence of Charge Transfer over Alkanethiol-Protected Au Nanoparticle Thin Layers

2005 ◽  
Vol 14 (4) ◽  
pp. 57-58
Author(s):  
Georgeta Lica
Keyword(s):  
Charge Transfer ◽  
Chain Length ◽  
Thin Layers ◽  
Au Nanoparticle ◽  
Potential Dependence

Charge transfer hopping mechanism in thin layers of chalcogenide system (As2Se3)100-xBix

2020 ◽  
Author(s):  
Gennadiy Bordovskii ◽  
Nadezhda Anisimova ◽  
Gennady Grabko
Keyword(s):  
Charge Transfer ◽  
Thin Layers ◽  
Hopping Mechanism

scholarly journals From tunable core-shell nanoparticles to plasmonic drawbridges: Active control of nanoparticle optical properties

2015 ◽  
Vol 1 (11) ◽  
pp. e1500988 ◽  
Author(s):  
Chad P. Byers ◽  
Hui Zhang ◽  
Dayne F. Swearer ◽  
Mustafa Yorulmaz ◽  
Benjamin S. Hoener ◽  
...  
Keyword(s):  
Optical Properties ◽  
Charge Transfer ◽  
Metallic Nanoparticles ◽  
Interparticle Distance ◽  
Plasmon Mode ◽  
Au Nanoparticle ◽  
Shell Nanoparticles ◽  
Strongly Coupled ◽  
Color Changes ◽  
Oxidation Reduction

The optical properties of metallic nanoparticles are highly sensitive to interparticle distance, giving rise to dramatic but frequently irreversible color changes. By electrochemical modification of individual nanoparticles and nanoparticle pairs, we induced equally dramatic, yet reversible, changes in their optical properties. We achieved plasmon tuning by oxidation-reduction chemistry of Ag-AgCl shells on the surfaces of both individual and strongly coupled Au nanoparticle pairs, resulting in extreme but reversible changes in scattering line shape. We demonstrated reversible formation of the charge transfer plasmon mode by switching between capacitive and conductive electronic coupling mechanisms. Dynamic single-particle spectroelectrochemistry also gave an insight into the reaction kinetics and evolution of the charge transfer plasmon mode in an electrochemically tunable structure. Our study represents a highly useful approach to the precise tuning of the morphology of narrow interparticle gaps and will be of value for controlling and activating a range of properties such as extreme plasmon modulation, nanoscopic plasmon switching, and subnanometer tunable gap applications.

Features of the charge transfer in structures based on thin layers of bismuth-modified arsenic triselenide

2010 ◽  
Vol 44 (8) ◽  
pp. 1004-1007 ◽  
Author(s):  
N. I. Anisimova ◽  
V. A. Bordovsky ◽  
G. I. Grabko ◽  
R. A. Castro
Keyword(s):  
Charge Transfer ◽  
Thin Layers ◽  
Arsenic Triselenide

Charge transfer process at the Ag/MPH/TiO2interface by SERS: alignment of the Fermi level

2016 ◽  
Vol 18 (43) ◽  
pp. 30053-30060 ◽  
Author(s):  
Xiaolei Zhang ◽  
Huimin Sui ◽  
Xiaolei Wang ◽  
Hongyang Su ◽  
Weina Cheng ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Fermi Level ◽  
Transfer Process ◽  
Au Nanoparticle ◽  
Charge Transfer Process ◽  
Interfacial Charge Transfer ◽  
Interfacial Charge

A nanoscale metal–molecule–semiconductor assembly (Ag/4-mercaptophenol/TiO2) has been fabricated over Au nanoparticle (NP) films as a model to study the interfacial charge transfer (CT) effects involved in Ag/MPH/TiO2.

scholarly journals Electrodeposited WO3/Au Photoanodes for Photoelectrochemical Reactions

2020 ◽  
Vol 49 (12) ◽  
pp. 3209-3217
Author(s):  
Lorna Jeffery Minggu ◽  
Nurul Akmal Jaafar ◽  
Kim Hang Ng ◽  
Khuzaimah Arifin ◽  
Rozan Mohamad Yunus
Keyword(s):  
Charge Transfer ◽  
Formic Acid ◽  
Tin Oxide ◽  
Glass Substrate ◽  
Tungsten Trioxide ◽  
Au Nanoparticle ◽  
Minimal Amount ◽  
Photocurrent Generation ◽  
Constant Potential ◽  
Fto Glass

This work aims to study the effect of gold (Au) loading on the photoelectrochemical behavior of tungsten trioxide (WO3) photoelectrodes. The WO3 film has been fabricated via electrodeposition method with constant potential on fluorine doped tin oxide (FTO) glass substrate. The Au nanoparticle loading on WO3 films surface was also prepared by constant potential electrodeposition. Due to the small amount of Au loading, the band gap values of the plasmonized WO3 remained around 2.6 eV. However, during the photoelectrochemical analysis, the photoactivity of the plasmonized WO3 photoelectrodes improved >100% with a minimal amount of Au loading compared to the pristine WO3. The photocurrent generation was further enhanced with the presence of organic donors (methanol and formic acid). The photocurrent achieved 3.74 mA/cm2 when 1.0 M of formic acid was added. Plausible charge transfer mechanism was suggested.

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