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You searched on: Author: steven robey Sorted by: title

Displaying records 1 to 10 of 22 records.
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1. Anisotropic Microstructure Development During the Reaction of Mg With GaAs
Published: 2/18/1998
Author: Steven W Robey
Abstract: Reaction of Mg with GaAs (001) surface occurs at substrate temperatures above 250 K and leads to 3D growth of an epitaxial, cubic reaction phase with a lattice constant of 0.62 + 0.02nm, 9% larger than GaAs. The resulting anistotropic, 3-demiensiona ...

2. Beyond Fullerene Acceptors: Comparison of Exciton Dissociation at Pc/C60 and Pc/PTCDA Interfaces
Published: 5/22/2015
Authors: Steven W Robey, Gregory J. Dutton
Abstract: The development of organic photovoltaic technologies would benefit from the introduction of non-fullerene materials to replace the dominant fullerene acceptors. However, efforts to replace fullerenes with non-fullerene polymers or small molecules ha ...

3. C60 Chain Phases on ZnPc/Ag(111) Surfaces: Pattern Formation Driven by Competing Intermolecular Interactions
Published: 2/4/2015
Authors: Steven W Robey, W. Jin, D. B. Dougherty, W. G. Cullen, J. E. Reutt-Robey, J. Weeks, Q. Liu,
Abstract: Serpentine chain C60 phases were observed in scanning tunneling microscopy (STM) images of C60 layers on ZnPc or pentacene covered Ag(111) and Au(111) surfaces. This low density, quasi-one-dimensional organization contrasts starkly with the close-pa ...

4. Comparison of Gas-Phase and Chemisorbed Photoemission Spectra of Oligo(para-phenylene-ethynlene)s
Published: Date unknown
Authors: Steven W Robey, Roger D van Zee, Christopher D Zangmeister, N E Gruhn, Yuxing Yao, J M Tour
Abstract: Ultraviolet photoemission spectra of the three-ring oligo(para-phenylene-ethynylene) and corresponding thiol were measured in the gas phase and compared to the spectrum of the thiolate chemisorbed on gold. The gas-phase spectra were simulated with va ...

5. Composition Dependent Electronic Structure Effects in Nd^d1^-xSr^dx^TiO^d3^
Published: 12/1/1997
Authors: Steven W Robey, V E Henrich, C Eylem, B W Eichhorn

6. Coordination and Local Transport Gap in C^d60^ Chains on a Pentacene Template
Published: Date unknown
Authors: Dan B. Dougherty, W Jin, J Cullen, Gregory Dutton, J Reutt-Robey, Steven W Robey
Abstract: The adsorption of C60 on a bilayer film of pentacene on Ag(111) is studied with scanning tunneling microscopy and spectroscopy. At low coverage, C60 molecules form extended linear structures due to the templating effect of the pentacene bilayer. Th ...

7. Dipole-Dipole Interactions in TiOPc Adlayers on Ag
Published: 2/20/2014
Authors: Steven W Robey, Xianjie Liu, Yinying Wei, Janice E. Reutt-Robey
Abstract: The molecular organization in layers of a polar phthalocyanine, titanyl phthalocyanine (TiOPc), on the Ag(110) surface was studied with scanning tunneling microscopy (STM). TiOPc molecules adsorb on Ag(110) in a tilted configuration in contrast to t ...

8. Distance-Dependent Ultrafast Dynamics at H2Pc\C60 Interfaces
Published: 12/5/2013
Authors: Gregory John Dutton, Steven W Robey
Abstract: We investigated the distance-dependence of interfacial charge transfer processes at the donor-acceptor heterojunction formed between H2Pc and C60. The interface region was formed layer-by-layer using organic molecular beam epitaxy (MBE). For each t ...

9. Effects of Substitution on Reorganization Energies in Oligo(-phenylene ethynylene) Molecular Wires
Published: Date unknown
Authors: Steven W Robey, Jacob Ciszek, J M Tour
Abstract: Observations of non-linear transport characteristics in nanoscale junctions triggered interest in phenylene ethynylene oligomers as potential electronic switching elements. Motivated by suggestions of vibronic origins for this behavior, we have stud ...

10. Fermi Level Alignment and Electronic Levels in Molecular Wire Self-Assembled Monolayers on Au
Published: 10/1/2004
Authors: Christopher D Zangmeister, Steven W Robey, Roger D van Zee, Yuxing Yao, J M Tour
Abstract: A combination of one- and two-photon photoelectron spectroscopies are used to determine the electronic structure around the Fermi level for self-assembled monolayers of a prototypical molecular wire , 4,4 -(ethynylphenyl)-1-benzenethiol (C6H5-CͰ ...

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