Devizis, A., Meerholz, K., Hertel, D. and Gulbinas, V. (2010). Ultrafast charge carrier mobility dynamics in poly(spirobifluorene-co-benzothiadiazole): Influence of temperature on initial transport. Phys. Rev. B, 82 (15). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9969
Full text not available from this repository.Abstract
In this work we examine the influence of temperature on the transport dynamics of photogenerated charge carriers in pi-conjugated poly(spirobifluorene-co-benzothiadiazol) films. Investigations were performed by picosecond time-resolved electric field induced second-harmonic technique. The mobility is independent of temperature during the initial 100 ps. During this time, the carriers drift about 6 nm under an applied field of 1.2 x 10(6) V/cm, and the mobility decreases from 3 x 10(-2) cm(2)/V s by one order of magnitude. We attribute this change in mobility to the intrachain charge transport during carrier relaxation down in the density of states. At a time delay of 1 ns the transport is temperature dependent with an activation energy of about 22 meV.
Item Type: | Journal Article | ||||||||||||||||||||
Creators: |
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URN: | urn:nbn:de:hbz:38-494274 | ||||||||||||||||||||
DOI: | 10.1103/PhysRevB.82.155204 | ||||||||||||||||||||
Journal or Publication Title: | Phys. Rev. B | ||||||||||||||||||||
Volume: | 82 | ||||||||||||||||||||
Number: | 15 | ||||||||||||||||||||
Date: | 2010 | ||||||||||||||||||||
Publisher: | AMER PHYSICAL SOC | ||||||||||||||||||||
Place of Publication: | COLLEGE PK | ||||||||||||||||||||
ISSN: | 2469-9969 | ||||||||||||||||||||
Language: | English | ||||||||||||||||||||
Faculty: | Unspecified | ||||||||||||||||||||
Divisions: | Unspecified | ||||||||||||||||||||
Subjects: | no entry | ||||||||||||||||||||
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URI: | http://kups.ub.uni-koeln.de/id/eprint/49427 |
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