Published April 16, 2012 | Version v1
Journal article Metadata-only

Substrate effect on the electronic structures of CuPc/graphene interfaces

Creators

  • 1. Center of Super-Diamond and Advanced Films (COSDAF) and Department of Physics and Materials Science, City University of Hong Kong (Hong Kong)

Description

The interfacial electronic structures of copper phthalocyanine (CuPc) deposited on a single-layer graphene (SLG) film prepared on Cu and SiO2 substrates (SLG/Cu and SLG/SiO2) were investigated using ultraviolet photoelectron spectroscopy. The ionization energy of CuPc on SLG/Cu and SLG/SiO2 substrate is, respectively, 5.62 eV and 4.97 eV. The energy level alignments at the two interfaces were estimated. The results revealed that the height of the electron (hole) injection barriers are 1.20 (1.10) and 1.38 (0.92) eV at CuPc/SLG/Cu and CuPc/SLG/SiO2 interfaces, respectively.

Additional details

Identifiers

DOI
10.1063/1.3703766;

Publishing Information

Journal Title
Applied Physics Letters
Journal Volume
100
Journal Issue
16
Journal Page Range
p. 161603-161603.4
ISSN
0003-6951
CODEN
APPLAB

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
43112813
Subject category
S36: MATERIALS SCIENCE; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S77: NANOSCIENCE AND NANOTECHNOLOGY;
Descriptors DEI
CHEMICAL VAPOR DEPOSITION; COPPER; COPPER COMPOUNDS; CRYSTAL GROWTH; ELECTRONIC STRUCTURE; ENERGY LEVELS; EV RANGE; HOLES; INTERFACES; LAYERS; ORGANIC SEMICONDUCTORS; PHTHALOCYANINES; SILICON OXIDES; SUBSTRATES; SURFACE IONIZATION; THIN FILMS; ULTRAVIOLET RADIATION; X-RAY PHOTOELECTRON SPECTROSCOPY
Descriptors DEC
CHALCOGENIDES; CHEMICAL COATING; DEPOSITION; DYES; ELECTROMAGNETIC RADIATION; ELECTRON SPECTROSCOPY; ELEMENTS; ENERGY RANGE; FILMS; HETEROCYCLIC COMPOUNDS; IONIZATION; MATERIALS; METALS; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHOTOELECTRON SPECTROSCOPY; RADIATIONS; SEMICONDUCTOR MATERIALS; SILICON COMPOUNDS; SPECTROSCOPY; SURFACE COATING; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS

Optional Information

Notes
(c) 2012 American Institute of Physics