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

doi:10.1063/1.4733293

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

Graduate Institute of Photonics

Research output: Contribution to journal › Article

20 Citations (Scopus)

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
Article number	013302
Journal	Applied Physics Letters
Volume	101
Issue number	1
DOIs	https://doi.org/10.1063/1.4733293
Publication status	Published - 2012 Jul 2

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.4733293

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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.",

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