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Doping of oligo(phenyl acetylene) with iodine vapour
Author(s) -
Bakker R.,
Weijers P.,
van der Werf C. H. M.,
Rath J. K.,
Schropp R. E. I.
Publication year - 2010
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200982840
Subject(s) - dopant , materials science , doping , transmittance , thin film , chemical vapor deposition , fourier transform infrared spectroscopy , acetylene , analytical chemistry (journal) , saturation (graph theory) , chemical engineering , chemistry , organic chemistry , nanotechnology , optoelectronics , mathematics , combinatorics , engineering
The doping with I 2 ‐vapour and dopant effusion of thin films of conjugated oligomers are reported in this work. The layers have been created solvent‐free, by initiated chemical vapour deposition (iCVD). FTIR spectra show an interaction of the dopant with the phenyl ring of the oligomer. Reflectance/transmittance measurements showed a saturation of the dopant in the 400 nm thick layers after 40 min. The films change from transparent to brown‐green in the doping process and show a drastic increase in conductivity. The material is quite easily processable and can be grown at an adequate rate (∼3.5 nm/min) for thin film device applications.