期刊
THIN SOLID FILMS
卷 403, 期 -, 页码 415-418出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/S0040-6090(01)01583-8
关键词
charge transport; charge extraction; regioregular poly(3-alkylthiophenes); field dependent mobility
For the study of the charge transport mechanism of equilibrium charge carriers in pi-conjugated polymers we use a novel, still technically simple method, namely charge extraction in a linearly increasing voltage (CELIV). We briefly outline the method and use it to study the temperature and electric field dependence of the mobility in regioregular poly(3-octylthiophene). We find that mobility can be explained using the well-known Poole-Frenkel type of law mualphamu(0)(T)exp[B(T)rootE], with an activated zero-field mobility. We also find that the nature of the mobility is determined by the release time from traps in regioregular poly(3-hexylthiophene). (C) 2002 Elsevier Science B.V. All rights reserved.
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