Online citations, reference lists, and bibliographies.
← Back to Search

Electronic Structure Of CdSe Nanoparticles Adsorbed On Au Electrodes By An Organic Linker: Fermi Level Pinning Of The HOMO

T. Markus, M. Wu, L. Wang, D. Waldeck, D. Oron, R. Naaman
Published 2009 · Chemistry

Cite This
Download PDF
Analyze on Scholarcy
Share
Assemblies of CdSe nanoparticles (NPs) on a dithiol-coated Au electrode were created, and their electronic energetics were quantified. This report describes the energy level alignment of the filled and unfilled electronic states of CdSe nanoparticles with respect to the Au Fermi level. Using cyclic voltammetry, it was possible to measure the energy of the filled states of the CdSe NPs with respect to the Au substrate relative to a Ag/AgNO3 electrode, and by using photoemission spectroscopy, it was possible to independently measure both the filled state energies (via single photon photoemission) and those of the unfilled states (via two photon photoemission) with respect to the vacuum level. Comparison of these two different measures shows good agreement with the IUPAC-accepted value of the absolute electrode potential. In contrast to the common model of energy level alignment, the experimental findings show that the CdSe filled states become ‘pinned’ to the Fermi level of the Au electrode, even for modera...



This paper is referenced by
A Computational Study of Silver Doped CdSe Quantum Dots
Heather M Gaebler (2017)
10.1117/12.893966
Modeling interfacial charge transport of quantum dots using cyclic voltammetry
Andrew Tobias (2011)
10.1007/s40710-018-0337-0
Quantum Dot Size Effect on the Frontier Molecular Orbital Energies in the Presence of Different Aquatic Environmental Ligands
B. Bresolin (2018)
10.1021/JZ401529V
The Capture of Low-Energy Electrons by PNA versus DNA
T. Markus (2013)
Solar-driven overall water splitting on CoO nanoparticles : first-principles density functional theory studies
Kyoung-won Park (2018)
Electrochemical and optical modulation of selenide and telluride ternary alloy quantum dots genosensors
Peter M. Ndangili (2012)
10.1021/JP2109187
Structural and Electronic Properties of Bare and Capped CdnSen/CdnTen Nanoparticles (n = 6, 9)
A. Kuznetsov (2012)
10.1016/J.CHEMPHYS.2012.09.005
Effects of S-containing ligands on the structure and electronic properties of CdnSen/CdnTen nanoparticles (n = 3, 4, 6, and 9)
E. Lim (2012)
10.1021/acsnano.5b01720
Band Edge Energetics of Heterostructured Nanorods: Photoemission Spectroscopy and Waveguide Spectroelectrochemistry of Au-Tipped CdSe Nanorod Monolayers.
Ramanan Ehamparam (2015)
10.1002/9783527648689.CH13
Semiconducting Nanocrystal/Conjugated Polymer Composites for Applications in Hybrid Polymer Solar Cells
M. Krueger (2013)
10.1021/JZ100475J
Potential-Modulated Attenuated Total Reflectance Characterization of Charge Injection Processes in Monolayer-Tethered CdSe Nanocrystals
Zeynep Ozkan Araci (2010)
Investigating the Effect of Nanoscale Changes on the Chemistry and Energetics of Nanocrystals with a Novel Photoemission Spectroscopy Methodology
M. W. Liao (2017)
10.1016/J.APSUSC.2013.03.079
Band alignment of ZnO/CdSe quantum dots heterojunction determined by ultraviolet photoelectron spectroscopy using synchrotron radiation
R. Li (2013)
10.1039/c1nr10465a
First-principles studies on structural and electronic properties of GaN-AlN heterostructure nanowires.
H. Zhang (2012)
10.1021/nn201681s
Size-dependent valence and conduction band-edge energies of semiconductor nanocrystals.
J. Jasieniak (2011)
10.1021/acs.accounts.8b00355
Directing Charge Transfer in Quantum Dot Assemblies.
B. Bloom (2018)
10.1080/08927022.2019.1642473
Computational insights into structural and optical properties of P-containing and N-containing ligands capped CdSe clusters
Shengping Yu (2019)
10.1021/JP205615P
Electrochemically Guided Photovoltaic Devices: A Photocurrent Study of the Charge Transfer Directionality between CdTe and CdSe Nanoparticles
Y. Wang (2011)
10.1021/nn1028828
Poisson-distributed electron-transfer dynamics from single quantum dots to C60 molecules.
Nianhui Song (2011)
10.1021/jz5006863
Photocatalysis from Fluorescence-Quenched CdSe/Au Nanoheterostructures: A Size-Dependent Study.
Udit N. Soni (2014)
10.1039/C5TC03945B
Eliminating Fermi-level pinning in PbS quantum dots using an alumina interfacial layer
B. Bloom (2016)
CHARACTERIZATION OF CHARGE INJECTION PROCESSES OF THIN FILMS ON INDIUM TIN OXIDE ELECTRODES USING A NOVEL SPECTROELECTROCHEMICAL TECHNIQUE: POTENTIAL-MODULATED ATTENUATED TOTAL REFLECTANCE SPECTROSCOPY
Zeynep Ozkan Araci (2010)
10.1021/JP403164W
Ligand-Induced Changes in the Characteristic Size-Dependent Electronic Energies of CdSe Nanocrystals
B. Bloom (2013)
10.1039/C0EE00181C
Elementary processes and limiting factors in hybrid polymer/nanoparticle solar cells
H. Borchert (2010)
10.1039/c3cp55226h
Electrochemical studies of the effects of the size, ligand and composition on the band structures of CdSe, CdTe and their alloy nanocrystals.
JinJin Liu (2014)
10.1021/JP4007747
Structural and Electronic Properties of Bare and Capped Cd33Se33 and Cd33Te33 Quantum Dots
A. Kuznetsov (2014)
10.1016/J.MOLSTRUC.2019.07.079
Effects of thiol ligands on the growth and stability of CdS nanoclusters
S. Nasraoui (2019)
10.1039/c4cp01649a
The relationship between interfacial bonding and radiation damage in adsorbed DNA.
R. Rosenberg (2014)
Development of microplasmas and analysis of complex biomolecules using plasma and synchrotron radiation
Joshua M. Symonds (2014)
10.1021/JP111463F
Quantum Confinement in CdTe Quantum Dots: Investigation through Cyclic Voltammetry Supported by Density Functional Theory (DFT)
S. Haram (2011)
10.1021/ACS.CHEMREV.6B00102
Electronic Processes within Quantum Dot-Molecule Complexes.
R. D. Harris (2016)
10.1039/C6RA07060D
MoS2 quantum dot decorated g-C3N4 composite photocatalyst with enhanced hydrogen evolution performance
Xixiong Jin (2016)
See more
Semantic Scholar Logo Some data provided by SemanticScholar