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

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. Up...

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Published in:Applied physics letters 2012-09, Vol.101 (11)
Main Authors: Tsao, Hou-Yen, Lin, Yow-Jon
Format: Article
Language:English
Subjects:
Annealing
Carrier mobility
Electronic properties
Pentacene
Polarons
Temperature dependence
Tunneling
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description 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 cm2/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.
doi_str_mv 10.1063/1.4752739
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source American Institute of Physics (AIP) Publications; American Institute of Physics:Jisc Collections:Transitional Journals Agreement 2021-23 (Reading list)
subjects Annealing
Carrier mobility
Electronic properties
Pentacene
Polarons
Temperature dependence
Tunneling
title Electronic properties of annealed pentacene films in air at various temperatures up to 400 K
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