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Uniaxial Stress Effect on the Charge Transfer in Highly Oriented Films of Iodinated Palladium Phthalocyanine
Author(s) -
Tanaka M.,
Tsuyoshi H.,
Yudasaka M.,
Kurita S.
Publication year - 1991
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221680113
Subject(s) - phthalocyanine , doping , materials science , raman spectroscopy , charge (physics) , molecule , stress (linguistics) , stacking , palladium , ion , spectroscopy , chemical physics , chemistry , nanotechnology , optoelectronics , optics , organic chemistry , physics , catalysis , linguistics , philosophy , quantum mechanics
The electronic structure of highly oriented films of iodinated palladium phthalocyanine (PdPcI x ), which are obtained by vacuum‐evaporation of PdPc on mica substrates and subsequent iodine‐doping, are studied by the piezoabsorption spectroscopy. Iodines are present as linear chains of I 3 −ions in between PdPc stacks, which is confirmed by resonant Raman scattering spectroscopy. The piezoabsorption spectra is measured under a uniaxial stress along the PdPc stacking axis. It is found that the tensile stress induces charge transfer from PdPc molecules to iodines in the lightly doped films and charge back‐transfer in the heavily doped films, and the charge transfer is not induced at the critical doping level.