Interfacial energy level bending in a crystalline p/p-type organic heterostructure

Journal Article · Mon May 16 04:00:00 EDT 2011 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3592994· OSTI ID:21518447

Feng, Zhu; Grobosch, Mandy; Treske, Uwe; Knupfer, Martin ^[1]; Lizhen, Huang; Shiliang, Ji; Donghang, Yan ^[2]

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1. IFW Dresden, D-01069 Dresden (Germany)
2. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022 Changchun (China)

A conduction channel was observed at the heterointerface of the crystalline p-type organic films copper phthalocyanine (CuPc) and 2,5-bis(4-biphenylyl) bithiophene (BP2T). Energy level bending at the interface is confirmed by photoemission spectroscopy, which verifies a charge transfer between CuPc and BP2T. This provides a further route to utilize interfacial electronic properties in functional devices and also documents the importance of reconsidering the interfacial electronic structure of organic heterostructures.

• OSTI ID: 21518447
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 20 Vol. 98; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BENDING
CHARGE EXCHANGE
COMPLEXES
COPPER COMPLEXES
DEFORMATION
DYES
ELECTRONIC STRUCTURE
EMISSION
ENERGY
ENERGY LEVELS
EQUIPMENT
FILMS
FREE ENERGY
HETEROCYCLIC COMPOUNDS
HETEROJUNCTIONS
INTERFACES
MATERIALS
ORGANIC COMPOUNDS
ORGANIC SEMICONDUCTORS
PHOTOEMISSION
PHTHALOCYANINES
PHYSICAL PROPERTIES
SECONDARY EMISSION
SEMICONDUCTOR JUNCTIONS
SEMICONDUCTOR MATERIALS
SPECTROSCOPY
SURFACE ENERGY
SURFACE PROPERTIES
THERMODYNAMIC PROPERTIES
THIN FILMS
TRANSITION ELEMENT COMPLEXES