Thumbnail
Access Restriction
Open

Author Li, Jeng-Ting ♦ Lu, Yu-Cheng ♦ Jiang, Shiau-Bin ♦ Zhong, Yuan-Liang ♦ Yeh, Jui-Ming
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ NANOSCIENCE AND NANOTECHNOLOGY ♦ CROSS-LINKING ♦ ELECTRON TRANSFER ♦ ELECTRONS ♦ MORPHOLOGY ♦ NANOFIBERS ♦ ONE-DIMENSIONAL CALCULATIONS ♦ ORGANIC SEMICONDUCTORS ♦ PHASE DIAGRAMS ♦ POLYMERS ♦ RANDOMNESS ♦ TEMPERATURE DEPENDENCE
Abstract Network formation by nanofiber crosslinking is usually in polymer materials as application in organic semiconductor devices. Electron hopping transport mechanisms depend on polymer morphology in network. Conducting polymers morphology in a random network structure is modeled by a quasi-one-dimensional system coupled of chains or fibers. We observe the varying hopping conduction mechanisms in the polyaniline nanofibers of the random network structure. The average diameter d of the nanofibers is varied from approximately 10 to 100 nm. The different dominant hopping mechanisms including Efros-Shklovskii variable-range hopping (VRH), Mott VRH, and nearest-neighbor hopping are dependent on temperature range and d in crossover changes. The result of this study is first presented in a phase diagram of hopping conduction mechanisms based on the theories of the random network model. The hopping conduction mechanism is unlike in normal semiconductor materials.
ISSN 00218979
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-12-07
Publisher Place United States
Journal Journal of Applied Physics
Volume Number 118
Issue Number 21


Open content in new tab

   Open content in new tab