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Doping in mixed films of differently substituted phthalocyanines measured in‐situ during film growth
Author(s) -
Cornelius Lena,
Beu Max,
Keil Christopher,
Schlettwein Derck
Publication year - 2012
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.201206053
Subject(s) - crystallinity , dopant , doping , materials science , bilayer , conductivity , evaporation , analytical chemistry (journal) , in situ , chemistry , organic chemistry , optoelectronics , composite material , membrane , physics , biochemistry , thermodynamics
Mixed films of unsubstituted phthalocyaninato copper (H 16 PcCu) and its perfluorinated derivative (F 16 PcCu) were prepared by co‐evaporation in different molecular mixtures. The films were analyzed in‐situ by conduction measurements. High admixtures of H 16 PcCu in F 16 PcCu films disturbed the charge transport. Optical transmission spectroscopy consequently showed the disturbance of the F 16 PcCu solid state structure for increased admixtures of H 16 PcCu. The spectral signatures of both the β bilayer ‐structure and the β‐structure of F 16 PcCu decreased. Low admixtures of H 16 PcCu increased the conductivity, indicating a successful dopant interaction at widely preserved crystallinity of F 16 PcCu. (© 2012 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)