Molecular alignment and energy-level diagram at heteromolecular interface of quaterrylene and terrylene-3,4,11,12-tetracarboximide

Nobuya Hiroshiba, Jonathan P. Hill, Ryoma Hayakawa, Toyohiro Chikyow, Kiyoto Matsuishi, Katsuhiko Ariga, Yutaka Wakayama

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Heteromolecular layers consisting of quaterrylene (QT) and terrylene-3,4,11,12-tetracarboximide (TTCDI-C 12) were prepared on SiO 2 surfaces and the electronic energy level alignment at TTCDIC12/ QT interface was examined. TTCDI-C 12 layers were grown in nearly perpendicular orientation on QT layers by an ultraslow deposition technique, thereby achieving formation of a well-defined TTCDI-C 12/QT interface. Atomic force microscopy (AFM) measurements ensured excellent surface flatness of each layer, surface roughnesses of which were comparable to that of pristine SiO 2. Energy level alignment at the heteromolecular interface was evaluated by using ultraviolet photoelectron spectroscopy (UPS) and optical absorption measurements. No shift in energy level was observed at the heteromolecular interface, indicating that charge transfer does not occur and a dipole moment is not formed at the well-defined TTCDI-C 12/QT interface.

Original languageEnglish
Pages (from-to)4888-4892
Number of pages5
JournalJournal of Nanoscience and Nanotechnology
Volume11
Issue number6
DOIs
Publication statusPublished - 2011 Dec 1
Externally publishedYes

Fingerprint

Photoelectron Spectroscopy
Molecular orientation
Atomic Force Microscopy
Electron energy levels
energy levels
diagrams
alignment
Ultraviolet photoelectron spectroscopy
Dipole moment
Light absorption
Charge transfer
Atomic force microscopy
Surface roughness
ultraviolet spectroscopy
flatness
surface roughness
dipole moments
optical absorption
charge transfer
terrylene

Keywords

  • Energy level alignment
  • Heteromolecular interface
  • Layer-by-layer growth
  • TTCDI-C
  • Ultraslow deposition
  • Ultraviolet photoelectron spectroscopy

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Chemistry(all)
  • Materials Science(all)
  • Bioengineering
  • Biomedical Engineering

Cite this

Molecular alignment and energy-level diagram at heteromolecular interface of quaterrylene and terrylene-3,4,11,12-tetracarboximide. / Hiroshiba, Nobuya; Hill, Jonathan P.; Hayakawa, Ryoma; Chikyow, Toyohiro; Matsuishi, Kiyoto; Ariga, Katsuhiko; Wakayama, Yutaka.

In: Journal of Nanoscience and Nanotechnology, Vol. 11, No. 6, 01.12.2011, p. 4888-4892.

Research output: Contribution to journalArticle

Hiroshiba, Nobuya ; Hill, Jonathan P. ; Hayakawa, Ryoma ; Chikyow, Toyohiro ; Matsuishi, Kiyoto ; Ariga, Katsuhiko ; Wakayama, Yutaka. / Molecular alignment and energy-level diagram at heteromolecular interface of quaterrylene and terrylene-3,4,11,12-tetracarboximide. In: Journal of Nanoscience and Nanotechnology. 2011 ; Vol. 11, No. 6. pp. 4888-4892.
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