Scanning tunneling microscopy/spectroscopy of picene thin films formed on Ag(111)
Abstract
Using ultrahigh-vacuum low-temperature scanning tunneling microscopy and spectroscopy combined with first principles density functional theory calculations, we have investigated structural and electronic properties of pristine and potassium (K)-deposited picene thin films formed in situ on a Ag(111) substrate. At low coverages, the molecules are uniformly distributed with the long axis aligned along the [112{sup ¯}] direction of the substrate. At higher coverages, ordered structures composed of monolayer molecules are observed, one of which is a monolayer with tilted and flat-lying molecules resembling a (11{sup ¯}0) plane of the bulk crystalline picene. Between the molecules and the substrate, the van der Waals interaction is dominant with negligible hybridization between their electronic states; a conclusion that contrasts with the chemisorption exhibited by pentacene molecules on the same substrate. We also observed a monolayer picene thin film in which all molecules were standing to form an intermolecular π stacking. Two-dimensional delocalized electronic states are found on the K-deposited π stacking structure.
- Authors:
-
- The Institute of Solid State Physics, The University of Tokyo, Kashiwa 277-8581 (Japan)
- Department of Physics, National Taiwan University, Taipei 106, Taiwan (China)
- Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwan (China)
- Department of Physics and Earth Science Department, University of the Ryukyus, 1 Nishihara, Okinawa 903-0213 (Japan)
- Publication Date:
- OSTI Identifier:
- 22308411
- Resource Type:
- Journal Article
- Journal Name:
- Journal of Chemical Physics
- Additional Journal Information:
- Journal Volume: 141; Journal Issue: 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-9606
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; CHEMISORPTION; DENSITY FUNCTIONAL METHOD; DEPOSITS; INTERACTIONS; MOLECULES; PENTACENE; POTASSIUM; SCANNING TUNNELING MICROSCOPY; SILVER 111; SPECTROSCOPY; SUBSTRATES; THIN FILMS; VAN DER WAALS FORCES
Citation Formats
Yoshida, Yasuo, Yokosuka, Takuya, Hasegawa, Yukio, Yang, Hung-Hsiang, Huang, Hsu-Sheng, Guan, Shu-You, Su, Wei-Bin, Chang, Chia-Seng, Yanagisawa, Susumu, Lin, Minn-Tsong, Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan, Hoffmann, Germar, and Department of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan. Scanning tunneling microscopy/spectroscopy of picene thin films formed on Ag(111). United States: N. p., 2014.
Web. doi:10.1063/1.4894439.
Yoshida, Yasuo, Yokosuka, Takuya, Hasegawa, Yukio, Yang, Hung-Hsiang, Huang, Hsu-Sheng, Guan, Shu-You, Su, Wei-Bin, Chang, Chia-Seng, Yanagisawa, Susumu, Lin, Minn-Tsong, Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan, Hoffmann, Germar, & Department of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan. Scanning tunneling microscopy/spectroscopy of picene thin films formed on Ag(111). United States. https://doi.org/10.1063/1.4894439
Yoshida, Yasuo, Yokosuka, Takuya, Hasegawa, Yukio, Yang, Hung-Hsiang, Huang, Hsu-Sheng, Guan, Shu-You, Su, Wei-Bin, Chang, Chia-Seng, Yanagisawa, Susumu, Lin, Minn-Tsong, Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan, Hoffmann, Germar, and Department of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan. 2014.
"Scanning tunneling microscopy/spectroscopy of picene thin films formed on Ag(111)". United States. https://doi.org/10.1063/1.4894439.
@article{osti_22308411,
title = {Scanning tunneling microscopy/spectroscopy of picene thin films formed on Ag(111)},
author = {Yoshida, Yasuo and Yokosuka, Takuya and Hasegawa, Yukio and Yang, Hung-Hsiang and Huang, Hsu-Sheng and Guan, Shu-You and Su, Wei-Bin and Chang, Chia-Seng and Yanagisawa, Susumu and Lin, Minn-Tsong and Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan and Hoffmann, Germar and Department of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan},
abstractNote = {Using ultrahigh-vacuum low-temperature scanning tunneling microscopy and spectroscopy combined with first principles density functional theory calculations, we have investigated structural and electronic properties of pristine and potassium (K)-deposited picene thin films formed in situ on a Ag(111) substrate. At low coverages, the molecules are uniformly distributed with the long axis aligned along the [112{sup ¯}] direction of the substrate. At higher coverages, ordered structures composed of monolayer molecules are observed, one of which is a monolayer with tilted and flat-lying molecules resembling a (11{sup ¯}0) plane of the bulk crystalline picene. Between the molecules and the substrate, the van der Waals interaction is dominant with negligible hybridization between their electronic states; a conclusion that contrasts with the chemisorption exhibited by pentacene molecules on the same substrate. We also observed a monolayer picene thin film in which all molecules were standing to form an intermolecular π stacking. Two-dimensional delocalized electronic states are found on the K-deposited π stacking structure.},
doi = {10.1063/1.4894439},
url = {https://www.osti.gov/biblio/22308411},
journal = {Journal of Chemical Physics},
issn = {0021-9606},
number = 11,
volume = 141,
place = {United States},
year = {Sun Sep 21 00:00:00 EDT 2014},
month = {Sun Sep 21 00:00:00 EDT 2014}
}