Electronic transport properties of pentacene single crystals upon exposure to air

Journal Article · Mon Aug 01 00:00:00 EDT 2005 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2001130· OSTI ID:20702523

Jurchescu, Oana D; Baas, Jacob; Palstra, Thomas T.M. ^[1]

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1. Solid State Chemistry Laboratory, Materials Science Centre, University of Groningen, Nijenborgh 4, 9747 AG Groningen (Netherlands)

We report the effect of air exposure on the electronic properties of pentacene single crystals. Air can diffuse reversibly in and out of the crystals and influences the physical properties. We discern two competing mechanisms that modulate the electronic transport. The presence of oxygen increases the hole conduction, as in dark four O{sub 2} molecules introduce one charge carrier. This effect is enhanced by the presence of visible light. Contrarily, water, present in ambient air, is incorporated in the crystal lattice and forms trapping sites for injected charges.

• OSTI ID: 20702523
• Journal Information: Applied Physics Letters, Vol. 87, Issue 5; Other Information: DOI: 10.1063/1.2001130; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ADSORPTION
AIR
CHARGE CARRIERS
CHARGED-PARTICLE TRANSPORT
CRYSTAL LATTICES
ELECTRIC CONDUCTIVITY
ELECTRONS
HOLES
MOLECULES
MONOCRYSTALS
ORGANIC SEMICONDUCTORS
OXYGEN
PENTACENE
PHYSICAL RADIATION EFFECTS
TRAPPING
TRAPS
VISIBLE RADIATION
WATER