Abstract
We studied the Hall-effect mobility of pentacene films prepared by the thermal evaporating method with different substrate temperature. A crossover from coherent bandlike charge transport with mobilities up to several tens of cm 2/V-s at low temperature to an incoherent hopping motion at high temperature is observed. The carrier mobilities of pentacene exhibit a hopping-to-band transition around room temperature. An exhibition of high mobility of pentacene films prepared with substrate temperature of 90 °C is attributed to the increased spacing between molecules.
Original language | English |
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Article number | 013302 |
Journal | Applied Physics Letters |
Volume | 101 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2012 Jul 2 |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)