Hall-effect mobility of pentacene films prepared by the thermal evaporating method with different substrate temperature

Yow Jon Lin, Hou Yen Tsao, Day Shan Liu

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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 languageEnglish
Article number013302
JournalApplied Physics Letters
Volume101
Issue number1
DOIs
Publication statusPublished - 2012 Jul 2

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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