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Photoconduction and transport mechanisms in polycrystalline zincphthalocyanine thin films
Author(s) -
Senthilarasu S.,
Lee S. H.
Publication year - 2007
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.200610856
Subject(s) - photoconductivity , crystallite , vacuum evaporation , thin film , materials science , vacuum deposition , diffraction , optoelectronics , wavelength , evaporation , intensity (physics) , ultra high vacuum , optics , nanotechnology , physics , metallurgy , thermodynamics
Zincphthalocyanine (ZnPc) thin films were prepared by the vacuum evaporation method under a pressure of 10 ‐6 mbar. The X‐ray diffraction analysis of vacuum evaporated ZnPc films reveals that the structure of the films is polycrystalline in nature. The photoconduction properties have been studied in the wavelength range 400 –800nm using suitable masks. The Photoconductivity of the films as a function of light intensity and applied voltage were studied and results were discussed in detail. The photoconduction was found to increase with higher light illumination and maximum at the band edge of the ZnPc thin film. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)