• Medientyp: Sonstige Veröffentlichung; Bericht; E-Book
  • Titel: Self-heating, bistability, and thermal switching in organic semiconductors
  • Beteiligte: Fischer, Axel [VerfasserIn]; Pahner, Paul [VerfasserIn]; Lüssem, Björn [VerfasserIn]; Leo, Karl [VerfasserIn]; Scholz, Reinhard [VerfasserIn]; Koprucki, Thomas [VerfasserIn]; Gärtner, Klaus [VerfasserIn]; Glitzky, Annegret [VerfasserIn]
  • Erschienen: Weierstrass Institute for Applied Analysis and Stochastics publication server, 2012
  • Sprache: Englisch
  • DOI: https://doi.org/10.20347/WIAS.PREPRINT.1735
  • Schlagwörter: 81.05.Fb ; 73.61.Wp ; 80A20 ; Organic semiconductor -- C60 -- Joule self-heating -- S-shaped negative differential resistance (SNDR) -- thermal switching -- bistability -- hysteresis -- Arrhenius-like conductivity law ; 34C55 ; 82D37 ; article ; 72.80.Le
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  • Beschreibung: We demonstrate electric bistability induced by the positive feedback of self-heating onto the thermally activated conductivity in a two-terminal device based on the organic semiconductor C60. The central undoped layer with a thickness of 200 nm is embedded between thinner n-doped layers adjacent to the contacts minimizing injection barriers. The observed current-voltage characteristics follow the general theory for thermistors described by an Arrhenius-like conductivity law. Our findings including hysteresis phenomena are of general relevance for the entire material class since most organic semiconductors can be described by a thermally activated conductivity.
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