Browsing by Author "Liu, Day-Shan"

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Hall-effect mobility of pentacene films prepared by the thermal evaporating method with different substrate temperature
(1970-01-01)
Lin, Yow-Jon
;
Tsao, Hou-Yen
;
Liu, Day-Shan
;
光電工程學系
;
Department of Photonics
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 degrees C is attributed to the increased spacing between molecules. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4733293]