skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Structural and electronic properties of ultrathin picene films on the Ag(100) surface

Abstract

In this study we investigate using scanning tunneling microscopy and electronic structure calculations the growth, assembly, and electronic properties of picene molecules on the Ag(100), Ag(111), and Cu(111) surfaces, with particular emphasis on Ag(100). In each case, the picene molecules are found to lie parallel to the surface at coverages up to half a monolayer and to adopt alternating parallel and tilted orientations at full monolayer coverage. In the latter case, the arrangement of the molecules is roughly similar to that in the bulk crystal, making ultrathin films of picene interesting model systems and worthwhile to explore its electronic properties. On the 2 metal surfaces considered, the growth mode of picene is quite different from that of its structural isomer pentacene, which forms bilayer coverage on top of a dense monolayer of flat-lying molecules on metal surfaces. Tunneling spectroscopy measurements provide estimates of the energies of several low-lying molecular orbitals as well as of the highest unoccupied molecular orbital of the absorbed picene molecules. From analysis of these results, we establish that the on-site Coulomb repulsion for picene decreases by ~ 2 eV in going from the gas phase to the full monolayer on Ag(100), bringing it close to thatmore » of the undoped bulk crystal.« less

Authors:
 [1];  [2];  [1];  [3];  [3];  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Univ. of Pittsburgh, PA (United States); National Energy Technology Lab. (NETL), Pittsburgh, PA, (United States)
  3. Univ. of Pittsburgh, PA (United States)
Publication Date:
Research Org.:
National Energy Technology Lab. (NETL), Albany, OR (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1477238
Alternate Identifier(s):
OSTI ID: 1434789
Grant/Contract Number:  
CHE-1362334
Resource Type:
Accepted Manuscript
Journal Name:
Surface Science
Additional Journal Information:
Journal Volume: 652; Journal Issue: C; Journal ID: ISSN 0039-6028
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Kelly, Simon J., Sorescu, Dan C., Wang, Jun, Archer, Kaye A., Jordan, Kenneth D., and Maksymovych, Petro. Structural and electronic properties of ultrathin picene films on the Ag(100) surface. United States: N. p., 2016. Web. doi:10.1016/j.susc.2016.02.007.
Kelly, Simon J., Sorescu, Dan C., Wang, Jun, Archer, Kaye A., Jordan, Kenneth D., & Maksymovych, Petro. Structural and electronic properties of ultrathin picene films on the Ag(100) surface. United States. doi:10.1016/j.susc.2016.02.007.
Kelly, Simon J., Sorescu, Dan C., Wang, Jun, Archer, Kaye A., Jordan, Kenneth D., and Maksymovych, Petro. Mon . "Structural and electronic properties of ultrathin picene films on the Ag(100) surface". United States. doi:10.1016/j.susc.2016.02.007. https://www.osti.gov/servlets/purl/1477238.
@article{osti_1477238,
title = {Structural and electronic properties of ultrathin picene films on the Ag(100) surface},
author = {Kelly, Simon J. and Sorescu, Dan C. and Wang, Jun and Archer, Kaye A. and Jordan, Kenneth D. and Maksymovych, Petro},
abstractNote = {In this study we investigate using scanning tunneling microscopy and electronic structure calculations the growth, assembly, and electronic properties of picene molecules on the Ag(100), Ag(111), and Cu(111) surfaces, with particular emphasis on Ag(100). In each case, the picene molecules are found to lie parallel to the surface at coverages up to half a monolayer and to adopt alternating parallel and tilted orientations at full monolayer coverage. In the latter case, the arrangement of the molecules is roughly similar to that in the bulk crystal, making ultrathin films of picene interesting model systems and worthwhile to explore its electronic properties. On the 2 metal surfaces considered, the growth mode of picene is quite different from that of its structural isomer pentacene, which forms bilayer coverage on top of a dense monolayer of flat-lying molecules on metal surfaces. Tunneling spectroscopy measurements provide estimates of the energies of several low-lying molecular orbitals as well as of the highest unoccupied molecular orbital of the absorbed picene molecules. From analysis of these results, we establish that the on-site Coulomb repulsion for picene decreases by ~ 2 eV in going from the gas phase to the full monolayer on Ag(100), bringing it close to that of the undoped bulk crystal.},
doi = {10.1016/j.susc.2016.02.007},
journal = {Surface Science},
number = C,
volume = 652,
place = {United States},
year = {2016},
month = {2}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 2 works
Citation information provided by
Web of Science

Save / Share: