Abstract
Field dependences of photogeneration quantum yields of charge carriers in films of amorphous molecular semiconductors at high external electric field strengths cannot be always explained in terms of the Onsager or the Poole–Frenkel model, which do not consider the effect of an electric field on basic parameters of these materials. It is assumed that an external electric field shifts the electron density in molecules from its equilibrium distribution, thus altering the probability of electronic transitions. The assumption has been verified in studying the effect of an external electric field on the absorption spectra of poly(N-epoxypropylcarbazole) films doped with a merocyanine dye. Correlation between the theoretical and experimental results has been obtained.
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REFERENCES
Kuvshinskii, N.G., Davidenko, N.A., and Komko, V.M., Fizika amorfnykh molekulyarnykh poluprovodnikov (Physics of Amorphous Molecular Semiconductors), Kiev: Lybid', 1994.
Borsenberger, P.M. and Weiss, D.S., Photoreceptors for Xerography, New York: Dekker, 1998.
Pope, M. and Swenberg, C.E., Electronic Processes in Organic Crystals and Polymers, Oxford: Oxford Univ. Press, 1999, 2nd ed.
Vannikov, A.V. and Grishina, A.D., Fotokhimiya polimernykh donorno-aktseptornykh kompleksov (Photochemistry of Donor-Acceptor Polymer Complexes), Moscow: Nauka, 1984.
Freimanis, Ya.F., Organicheskie soedineniya s vnutrimolekulyarnym perenosom zaryada (Intramolecular-Charge-Transfer Organic Compounds), Riga: Zinatne, 1985.
Ishchenko, A.A., Stroenie i spektral'no-lyuminestsentnye svoistva polimetinovykh krasitelei (The structure and Spectral-and-Luminescent Properties of Polymeric Dyes), Kiev: Naukova Dumka, 1994.
Melz, P.J., J. Chem. Phys., 1972, vol. 5, no. 4, p. 1694.
Davidenko, N.A. and Kuvshinsky, G.N., J. Inf. Rec. Mater., 1994, vol. 21, p. 612.
Ziman, J.M., Principles of the Theory of Solids, Cambridge: Cambridge Univ. Press, 1972. Translated under the title Printsipy teorii tverdogo tela, Moscow: Mir, 1974.
Zamaraev, K.I., Khairutdinov, R.F., and Zhdanov, V.P., Tunnelirovanie elektrona v khimii (Electron Tunneling in Chemistry), Novosibirsk: Nauka, 1985.
Gol'danskii, V.I., Trakhtenberg, L.I., and Flerov, V.N., Tunnel'nye yavleniya v khimicheskoi fizike (Tunneling Phenomena in Chemical Physics), Moscow: Nauka, 1986.
Bassler, H., Phys. Status Solidi B, 1981, vol. 107, no. 1, p. 9.
Landau, L.D. and Lifshits, E.M., Elektrodinamika sploshnykh sred (Electrodynamics of Continuos Media), Moscow: Nauka, 1982.
Sivukhin, D.V., Obshchii kurs fiziki. Optika (General Physics: Optics), Moscow: Nauka, 1985.
Medvedev, E.S. and Osherov, V.I., Teoriya bezizluchatel'nykh perekhodov v mnogoatomnykh molekulakh (The Theory of Radiationless Transitions in Molecules), Moscow: Nauka, 1983.
Derevyanko, N.A., Ishchenko, A.A., Davidenko, N.A., Pavlov, V.A., and Chuprina, N.G., Teor. Eksp. Khim., 2001, vol. 37, no. 1, p. 1.
Davidenko, N.A., Derevyanko, N.A., Ishchenko, A.A., and Pavlov, V.A., Opt. Spektrosk., 2001, vol. 91, no. 4, p. 621.
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Davidenko, N.A., Zabolotnyi, M.A., Ishchenko, A.A. et al. Electric Field Effects on Photoconductivity and Electronic Absorption Spectra of Photogeneration Sites in Amorphous Molecular Semiconductors. High Energy Chemistry 38, 13–20 (2004). https://doi.org/10.1023/B:HIEC.0000012058.91868.b3
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DOI: https://doi.org/10.1023/B:HIEC.0000012058.91868.b3