Photoelectric Properties of Copper Phthalocyanine Langmuir-Blodgett Film

Abstract

Photovoltaic and structural characteristics of Langmuir-Blodgett film photocells have been studied using asymmetrically substituted copper phthalocyanine (asy-CuPc). By polarized-light absorbance measurements, each phthalocyanine molecule was found to be arranged in the film with its ring facing towards the dipping direction. The polarity of photoelectric characteristics showed typical features expected for an organic p-type Schottky diode, while the dark characteristics exhibited a reversed polarity. The maximum short-circuit photocurrent was on the order of 10-8 A/cm2 for 100 µW/cm2 monochromatic light, indicating the superiority of asy-CuPc as a film-forming molecule for photovoltaic LB films.

Chemsensor of NO2 gas based on porphyrin of 5, 10, 15, 20-tetraphenylporphyrin LB films and LS films

“…The orientation angles normal to the film and the dipping direction, respectively θ, φ were calculated 18 by the following Equations 4 and 5:…”

The Macrocycle Orientation of Symmetrically Substituted CuPc and Por Derivatives in Nano-laminated Films by Polarized UV-vis Spectra

“…For study of the molecular orientation condensed in the film the macrocycle is considered as a flat circular plate on which π-π* transition dipole is uniformly distributed according to Yoneyama [8]. The experimental data and calculation results are listed in Table 1.…”

The molecular orientation in Monomolecular Layer of Asymmetrically Substituted Copper ( ) Phthalocyanines

“…In order to deal with it, the phthalocyanine ring is considered as a flat circular plate on which -* transition dipole is uniformly distributed according to Yoneyama [5]. The experimen tal data and calculation results are listed in Table 2.…”