2005/01/24 by Oana D. Jurchescu, Jacob Baas, Thomas T. M. Palstra
Chemistry · Engineering · Materials Science · Physics and Astronomy · #Chemical and Physical Properties of Materials #Fullerene Chemistry and Applications #Organic Electronics and Photovoltaics #cond-mat.mtrl-sci #cond-mat.soft
paper · pdf · doi:10.1063/1.2001130
16 pages, 3 figures
arxiv created 2005/01/24 · openalex publication_date 2005/07/25 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
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 O2 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.