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 | |
| Publication status | Published - 2012 Sep 10 |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)
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Tsao, H. Y., & Lin, Y. J. (2012). Electronic properties of annealed pentacene films in air at various temperatures up to 400 K. Applied Physics Letters, 101(11), [113306]. https://doi.org/10.1063/1.4752739