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

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

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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.

Original languageEnglish
Pages (from-to)1457-1461
Number of pages5
JournalSemiconductors
Volume45
Issue number11
DOIs
Publication statusPublished - Nov 2011
Externally publishedYes

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