Band-Like Charge Transport in Phytic Acid-Doped Polyaniline Thin Films |
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Authors: | Marco Ballabio Tao Zhang Chen Chen Peng Zhang Zhongquan Liao Mike Hambsch Stefan C B Mannsfeld Ehrenfried Zschech Henning Sirringhaus Xinliang Feng Mischa Bonn Renhao Dong Enrique Cánovas |
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Affiliation: | 1. Max Planck Institute for Polymer Research, 55128 Mainz, Germany;2. Center for Advancing Electronics Dresden (cfaed) and Faculty of Chemistry and Food Chemistry Chair of Molecular Functional Materials Technische Universität Dresden Mommsenstraße 4, 01069 Dresden, Germany;3. Optoelectronics Group, Cavendish Laboratory, JJ Thomson Avenue, Cambridge, CB3 0HE UK;4. Fraunhofer Institute for Ceramic Technologies and Systems (IKTS), Maria-Reiche-Strasse 2, 01109 Dresden, Germany;5. Center for Advancing Electronics Dresden (cfaed) and Faculty of Electrical and Computer Engineering, Technische Universität Dresden, 01062 Dresden, Germany |
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Abstract: | We explore the charge transport properties of phytic acid (PA) doped polyaniline thin films prepared by the surfactant monolayer-assisted interfacial synthesis (SMAIS). Structural and elemental analysis confirms the inclusion of PA in the thin films and reveals a progressive loss of crystallinity with the increase of PA doping content. Charge transport properties are interrogated by time-resolved terahertz (THz) spectroscopy. Notably, independently of doping content and hence crystallinity, the frequency-resolved complex conductivity spectra in the THz region can be properly described by the Drude model, demonstrating band-like charge transport in the samples and state-of-the-art charge carrier mobilities of ≈1 cm2V?1s?1. A temperature-dependent analysis for the conductivity further supports band-like charge transport and suggest that charge carrier mobility is primarily limited by impurity scattering. This work highlights the potential of PA doped polyaniline for organic electronics. |
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Keywords: | band-like charge transport conducting polymers interfacial synthesis polyaniline thin films |
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