Modulation of optical absorption in poly(diphenylenephthalide) films near the switching threshold

Optical properties of poly(diphenylenephthalide) nonconjugated polymer films near the electronic switching threshold have been studied by modulation spectroscopy. The measured spectra exhibit specific features in the range of the band gap at ∼2.4 eV. The results obtained have been interpreted using...

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Bibliographic Details
Published inPhysics of the solid state Vol. 52; no. 1; pp. 195 - 200
Main Authors Lachinov, A. N., Zhdanov, É. R., Rakhmeev, R. G., Salikhov, R. B., Antipin, V. A.
Format Journal Article
LanguageEnglish
Published Dordrecht SP MAIK Nauka/Interperiodica 2010
Springer
Subjects
Analysis
Dielectrics
Optical properties
Physics
Physics and Astronomy
Polymers and Liquid Crystals
Solid State Physics
Electronic Work Function
High Occupied Molecular Orbital
Polymer Film
Excess Charge
Polymer Molecule
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Summary:Optical properties of poly(diphenylenephthalide) nonconjugated polymer films near the electronic switching threshold have been studied by modulation spectroscopy. The measured spectra exhibit specific features in the range of the band gap at ∼2.4 eV. The results obtained have been interpreted using quantum-chemical calculations of the electron energy characteristics of the polymer molecule. It has been established that the injection of charge carriers into the polymer film and interaction of this excess charge with the macromolecule can lead to the formation of deep trap states near the center of the band gap.
ISSN:1063-7834
1090-6460
DOI:10.1134/S1063783410010336