Surface and interface analysis of iodine-doped pentacene structures for OTFTs

We investigated the impact of iodine doping on structural properties of pentacene layers as a function of iodine concentration, which is controlled by the diffusion time. Furthermore, also the storing history of the samples is examined. We found that the iodine doping properties of pentacene samples...

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Bibliographic Details
Published in:Surface and interface analysis 2011-01, Vol.43 (1-2), p.518-521
Main Authors: Jakabovič, J., Vincze, A., Kováč, J., Srnánek, R., Kováč Jr, J., Dobročka, E., Donoval, D., Heinemeyer, U., Schreiber, F., Machovič, V., Uherek, F.
Format: Article
Language:English
Subjects:
AFM
Atomic, molecular, and ion beam impact and interactions with surfaces
Chemical composition analysis, chemical depth and dopant profiling
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Cross-disciplinary physics: materials science
rheology
Diffusion
Diffusion layers
Diffusion rate
Doping
Electron and ion emission by liquids and solids
impact phenomena
Exact sciences and technology
Impact phenomena (including electron spectra and sputtering)
Interface analysis
Iodine
iodine doping
Materials science
Materials testing
micro-Raman
Pentacene
Physics
SIMS
Storage
XRD
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Summary:We investigated the impact of iodine doping on structural properties of pentacene layers as a function of iodine concentration, which is controlled by the diffusion time. Furthermore, also the storing history of the samples is examined. We found that the iodine doping properties of pentacene samples strongly depend on the storing conditions (ambient atmosphere, time) before diffusion. We observed that the iodine diffusion process into pentacene layers is much faster for new recently prepared samples in contrast to old samples that were stored a few months at atmospheric ambient condition in the dark box before iodine diffusion. Copyright © 2010 John Wiley & Sons, Ltd.
ISSN:0142-2421
1096-9918
1096-9918
DOI:10.1002/sia.3420