Terahertz study of hole transport in pentacene thin films

Stefan G. Engelbrecht; Markus Prinz; Thomas R. Arend; Roland Kersting

doi:10.1117/12.2060817

7 October 2014 Terahertz study of hole transport in pentacene thin films

Stefan G. Engelbrecht, Markus Prinz, Thomas R. Arend, Roland Kersting

Proceedings Volume 9185, Organic Field-Effect Transistors XIII; and Organic Semiconductors in Sensors and Bioelectronics VII; 91850S (2014) https://doi.org/10.1117/12.2060817
Event: SPIE Organic Photonics + Electronics, 2014, San Diego, California, United States

Abstract

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 m_h ≈ 0.8 m_e.

Citation Download Citation

Stefan G. Engelbrecht, Markus Prinz, Thomas R. Arend, and 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); https://doi.org/10.1117/12.2060817

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