Photoconductivity in thin films of phthalocyanine
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In this article, the photocurrent and electrolyte electromodulation spectra of thin films of metal-free phthalocyanine (H2Pc) and of copper phthalocyanines (CuPc), and the spectral dependence maxima of photoconductivity correspond to the modulation spectra.Abstract:
The photocurrent and electrolyte electromodulation (EEM) spectra of thin films of metal-free phthalocyanine (H2Pc) and of copper phthalocyanine (CuPc) were investigated. The modulation spectra yielded three distinct features around 1·61, 2·30 and 2·93 eV for H2Pc and around 1·63, 2·04 and 3·20 eV for CuPc. The spectral dependence maxima of photoconductivity correspond to the modulation spectra. These features are interpreted to indicate transitions at critical points, i.e. the existence of transitions between three valence bands, since Pc’s are p-type, and the lowest conduction band in Pc’s.read more
Citations
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Structural Investigation of Copper Phthalocyanine Thin Films Using X‐Ray Diffraction, Raman Scattering and Optical Absorption Measurements
TL;DR: In this paper, structural properties of copper phthalocyanine (CuPc) powder and its thin films coated on glass plate are investigated using X-ray diffraction, Raman scattering and optical absorption techniques.
Journal ArticleDOI
Role of metal phthalocyanine in redox complex conductivity of polyaniline and aniline black
TL;DR: In this paper, the authors showed that polyaniline and aniline black (AB) were prepared in powder form by the chemical method of oxidative polymerization, from which free-standing thin films were obtained by solvent evaporation using N-methyl pyrrolidinone.
OtherDOI
Phthalocyanines: A Class of Organic Photoconductive Materials
TL;DR: In this article , a literature review is compiled for phthalocyanines, highlighting critical factors influencing PHTHN's photoconductivity, including electron traps, electron-hole pairs, and the number of free holes in the valence bands.
References
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Third-derivative modulation spectroscopy with low-field electroreflectance
TL;DR: The theoretical basis and experimental procedures for third-derivative modulation spectroscopy, which is the same as low-field electroreflectance, are reviewed in this article, in terms of the effect of a uniform electric field on the translational symmetry of the unperturbed crystal.
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136. An X-ray study of the structure of the phthalocyanines. Part I. The metal-free, nickel, copper, and platinum compounds
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255. An X-ray study of the phthalocyanines. Part II. Quantitative structure determination of the metal-free compound
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Electrical Properties of Poly‐Copper Phthalocyanine
A. Epstein,Bernard S. Wildi +1 more
TL;DR: Hall effect and electrical resistivity measurements as a function of temperature to ∼450°C have been carried out on a polymer of copper phthalocyanine as discussed by the authors, and it is concluded that intrinsically the polymer of this polymer is P type.
Journal ArticleDOI
Interband dielectric properties of solids in an electric field.
TL;DR: In this article, a general expression for the imaginary part of the one-electron interband dielectric function of a solid in the presence of an electric field is derived, which is valid for all regions of k-space and explicitly takes into account the variation of the dipole matrix element and effective mass throughout the Brillouin zone.