7 October 2014 Terahertz study of hole transport in pentacene thin films
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Terahertz electromodulation spectroscopy is a novel tool for studying charge carrier transport in polycrys­talline thin films. The technique selectively probes the high-frequency response of mobile carriers and is insensitive to scattering at grain boundaries as well as to trapping processes. In thin films of pentacene we find a hole mobility of 21 cm2 /Vs, which exceeds the largest previously reported values obtained in poly­ crystalline pentacene. Additionally, the data provide an upper limit of the hole conductivity effective mass of mh ≈ 0.8 me.
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Stefan G. Engelbrecht, Stefan G. Engelbrecht, Markus Prinz, Markus Prinz, Thomas R. Arend, Thomas R. Arend, Roland Kersting, Roland Kersting, "Terahertz study of hole transport in pentacene thin films", Proc. SPIE 9185, Organic Field-Effect Transistors XIII; and Organic Semiconductors in Sensors and Bioelectronics VII, 91850S (7 October 2014); doi: 10.1117/12.2060817; https://doi.org/10.1117/12.2060817

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