Electronic properties of annealed pentacene films in air at various temperatures up to 400 K

Hou Yen Tsao; Yow Jon Lin

doi:10.1063/1.4752739

Electronic properties of annealed pentacene films in air at various temperatures up to 400 K

Hou Yen Tsao, Yow Jon Lin

Graduate Institute of Photonics

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

This study examined the electronic properties of annealed pentacene films in air at various temperatures up to 400 K for 1 min. The carrier mobility in pentacene samples exhibits unexpectedly strong temperature dependence, implying the domination of tunneling (hopping) at low (high) temperatures. Upon annealing temperature, the molecule structure is not affected. The room-temperature mobility was drastically increased from 2.42 to 4.73 cm ²/V-s by thermal annealing at 350 K. Hall-effect analysis by using the polaron theory revealed that the enhanced mobility by proper annealing is due to the increased spacing between molecules.

Original language	English
Article number	113306
Journal	Applied Physics Letters
Volume	101
Issue number	11
DOIs	https://doi.org/10.1063/1.4752739
Publication status	Published - 2012 Sep 10

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.4752739

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abstract = "This study examined the electronic properties of annealed pentacene films in air at various temperatures up to 400 K for 1 min. The carrier mobility in pentacene samples exhibits unexpectedly strong temperature dependence, implying the domination of tunneling (hopping) at low (high) temperatures. Upon annealing temperature, the molecule structure is not affected. The room-temperature mobility was drastically increased from 2.42 to 4.73 cm 2/V-s by thermal annealing at 350 K. Hall-effect analysis by using the polaron theory revealed that the enhanced mobility by proper annealing is due to the increased spacing between molecules.",

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