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Crystalline TQPP as p-type semiconductor: X-ray crystallographic investigation, OTFT device, and computational analysis of transport properties

MPG-Autoren
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Zschieschang,  U.
Research Group Organic Electronics (Hagen Klauk), Max Planck Institute for Solid State Research, Max Planck Society;

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Klauk,  H.
Research Group Organic Electronics (Hagen Klauk), Max Planck Institute for Solid State Research, Max Planck Society;

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Zitation

Wex, B., El-Ballouli, A. O., Vanvooren, A., Zschieschang, U., Klauk, H., Krause, J. A., et al. (2015). Crystalline TQPP as p-type semiconductor: X-ray crystallographic investigation, OTFT device, and computational analysis of transport properties. Journal of Molecular Structure, 1093, 144-149.


Zitierlink: https://hdl.handle.net/21.11116/0000-000E-CC30-6
Zusammenfassung
Two p-type semiconducting azapyrenoacene materials, quinoxalino[2',3':9,10]phenanthro[4,5-abc]phenazine (TQPP) and 6,7,15,16-tetramethylquinoxalino[2',3':9,10]phenanthro[4,5-abc]phenazine (TQPP-[CH3](4)), were characterized and were found to display high thermal stability and planar molecular geometry as revealed by single-crystal X-ray analysis. In bottom-gate p-channel organic thin-film transistors, field-effect mobilities of 2.5 x 10(-3) cm(2)/V s and 7.5 x 10(-3) cm(2)/V s were measured in ambient air for TQPP and TQPP-[CH3](4), respectively. Computational results of reorganization energies and electronic couplings indicate larger inter and intra-columnar couplings for TQPP-[CH3](4) in comparison to TQPP and predict the suitability of both semiconductors for hole as well as electron transporters. (C) 2015 Elsevier B.V. All rights reserved.