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

doi:10.1166/jnn.2011.4749

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^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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 language	English
Pages (from-to)	4888-4892
Number of pages	5
Journal	Journal of Nanoscience and Nanotechnology
Volume	11
Issue number	6
DOIs	https://doi.org/10.1166/jnn.2011.4749
Publication status	Published - 2011 Dec 1
Externally published	Yes

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

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

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.",

keywords = "Energy level alignment, Heteromolecular interface, Layer-by-layer growth, TTCDI-C, Ultraslow deposition, Ultraviolet photoelectron spectroscopy",

author = "Nobuya Hiroshiba and Hill, {Jonathan P.} and Ryoma Hayakawa and Toyohiro Chikyow and Kiyoto Matsuishi and Katsuhiko Ariga and Yutaka Wakayama",

year = "2011",

month = dec,

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doi = "10.1166/jnn.2011.4749",

language = "English",

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pages = "4888--4892",

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AU - Hiroshiba, Nobuya

AU - Hill, Jonathan P.

AU - Hayakawa, Ryoma

AU - Chikyow, Toyohiro

AU - Matsuishi, Kiyoto

AU - Ariga, Katsuhiko

AU - Wakayama, Yutaka

PY - 2011/12/1

Y1 - 2011/12/1

N2 - 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.

AB - 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.

KW - Energy level alignment

KW - Heteromolecular interface

KW - Layer-by-layer growth

KW - TTCDI-C

KW - Ultraslow deposition

KW - Ultraviolet photoelectron spectroscopy

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

Abstract

Keywords

ASJC Scopus subject areas

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