Abstract
The transport properties of organic semiconductors based on europium diphthalocyanine and bitris-phthalocyanine complexes with ortho-bis(oxymethyl)phenyl bridge and based on europium and erbium dinaphthalocyanine are studied. The temperature dependences of the dc conductivity for all types of the structures under study are obtained; it is shown that all dependences include two activation portions. For high-temperature portions, the activation energies are determined as 0.85 eV for europium diphthalocyanine with the ortho-bis(oxymethyl)phenyl bridge, 1.135 eV for europium bi-tris-phthalocyanine with the orthobis(oxymethyl)phenyl bridge, 0.98 eV for europium dinaphthalocyanine, and 1.18 eV for erbium dinaphthalocyanine. For the low-temperature activation portion, it is shown that lanthanide ions and their bond with a ligand make the dominant contribution to the conductivity of the structures under study.
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Original Russian Text © I.A. Belogorokhov, E.V. Tikhonov, M.A. Dronov, Yu.V. Ryabchikov, N.V. Pashkova, E.I. Kladova, L.I. Belogorokhova, L.G. Tomilova, D.R. Khokhlov, 2011, published in Fizika i Tekhnika Poluprovodnikov, 2011, Vol. 45, No. 11, pp. 1514–1519.
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Belogorokhov, I.A., Tikhonov, E.V., Dronov, M.A. et al. Study of the transport properties of organic semiconductors based on europium diphthalocyanine and bi-tris-phthalocyanine complexes with ortho-bis(oxymethyl)phenyl bridge and based on erbium and europium dinaphthalocyanine complexes. Semiconductors 45, 1457–1461 (2011). https://doi.org/10.1134/S1063782611110054
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DOI: https://doi.org/10.1134/S1063782611110054