Amorphous, glassy, organic semiconductors

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. Belogorohov^a, E. V. Tikhonov^b, M. A. Dronov^c, Yu. V. Ryabchikov^d, N. V. Pashkova^a, E. I. Kladova^a, L. I. Belogorokhova^b, L. G. Tomilova^b, D. R. Khokhlov<sup>b

a</sup> JSC "Giredmet" SRC RF, the Federal State Research and Design Institute of Rare Metal Industry, Moscow
^b Lomonosov Moscow State University
^c Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow
^d P. N. Lebedev Physical Institute, Russian Academy of Sciences, Moscow

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.

Received: 19.04.2011
Accepted: 29.04.2011

 English version: Semiconductors, 2011, 45:11, 1457–1461

Bibliographic databases:

•