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Hole Mobility of a Liquid Organic Semiconductor
Brett A Kamino1, Timothy P Bender1,2, Richard A Klenkler3
1†Department of Chemical Engineering and Applied Chemistry, The University of Toronto, 200 College Street, Toronto, Ontario, Canada, M5S 3E5.
The Journal of Physical Chemistry Letters
|August 20, 2015
Summary
Molecular motion in liquid organic semiconductors (LOS) does not significantly impact charge transport. This study reveals LOS behavior mirrors solid-state transport, suggesting potential for electronic device applications.
Area of Science:
- Organic electronics
- Materials science
- Charge transport phenomena
Background:
- Liquid organic semiconductors (LOS) offer unique physical properties for electronic applications.
- Understanding charge transport mechanisms in LOS is crucial for device development.
- The influence of molecular dynamics on charge mobility in the liquid state remains largely unexplored.
Purpose of the Study:
- To investigate the effect of molecular motion on charge transport in a liquid organic semiconductor.
- To determine hole transport mobilities in a silyl ether-substituted triarylamine over a range of temperatures.
- To compare charge transport behavior in LOS with that of conventional solid-state organic semiconductors.
Main Methods:
- Fabrication and characterization of a charge transport device using a liquid organic semiconductor.
- Measurement of hole transport mobilities at various temperatures above the glass transition point.
- Analysis of temperature-dependent mobility data to assess the role of molecular motion.
Main Results:
- Hole transport mobilities were successfully measured in the liquid organic semiconductor.
- Analysis indicated that molecular motion has a negligible effect on macroscopic charge transport.
- The observed transport characteristics closely resemble those of disordered solid organic materials.
Conclusions:
- Molecular dynamics do not significantly impede charge transport in the studied liquid organic semiconductor.
- Silyl ether-substituted liquid organic semiconductors exhibit transport properties comparable to solid-state materials.
- These findings suggest that liquid organic semiconductors are viable candidates for integration into electronic devices, leveraging their unique liquid state.
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