Novel Organic Semiconductor BTQBT with High Conductivity and High Mobility
H. Inokuchi and K. Imaeda
Institute for Molecular Science, Myodaiji, Okazaki 444, Japan
Received: July 18, 1995
Dedicated to Professors Krzysztof Pigoń, Józef W. Rohleder and Zdzisław Ruziewicz on the occasion of their 70th birthdays
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We have found a novel organic semiconductor, BTQBT, with a high electrical conductivity of about 10-3 S cm-1 and a high Hall mobility of about 3 cm2 V-1s-1 at room temperature. We have also succeeded in mea­suring the temperature dependence of the Hall mobility. It varies with tem­perature as Τ-1.6, which agrees with the theoretical Τ-1.5 dependence for the mobility determined by lattice scattering. The characteristic transport property of BTQBT results from strong intermolecular interactions in the crystal, which is convinced by the energy dispersion with a bandwidth of about 0.5 eV from the theoretical and experimental band structures.
DOI: 10.12693/APhysPolA.88.1161
PACS numbers: 72.20.-i, 79.60.-i