Spectroscopic ellipsometry of metal phthalocyanine thin films

Abstract

Optical functions of cobalt phthalocyanine, nickel phthalocyanine (NiPc), and iron phthalocyanine (FePc) have been determined by use of spectroscopic ellipsometry in the spectral range 1.55-4.1 eV (300-800 nm). The samples were prepared by evaporation onto glass and silicon substrates. The optical functions were determined by point-to-point fit. Absorption spectra were also measured. The index-of-refraction data for NiPc and FePc are reported for the first time to our knowledge. Good agreement with the experimental spectra was obtained for all three materials.

Investigation of negative magneto-conductance properties of cobalt phthalocyanine thin films

“…The nature of extinction coefficient over the wavelength range from 300 to 700 nm is almost same as reported earlier [1]. Negative extinction coefficient is also observed in the wavelength range of 700-1000 nm which may be due to high reflection of optical incident wave [39,40]. The CoPc thin film shows broad absorption of light that may generate photocurrent.…”

Magnetic field influence on the molecular alignment of vanadyl phthalocyanine thin films

“…This absorption peak is known as B or Soret band. Both bands, Q and B correspond to the p-p à transitions and their transition dipoles lie in the plane of the molecule [25,26].…”

Microscopic Simulations of Charge Transport in Disordered Organic Semiconductors

“…(70) Thus, c p = 0.01 ± 0.04, yielding outersphere reorganization energies of λ ij out < 0.08 eV, which are small compared to λ ij int . Similar results have been reported for other organic semiconductors and different methods for computing λ ij out .…”