Picosecond studies of photoconductivity and photoinduced absorption of phenylated poly (phenylene vinylene) s

Time resolved studies on films and solutions of phenylated poly (phenylene vinylene) s (P-PPV) were performed under irradiation with light pulses of 150 μJ energy and 351 (355) nm wavelengths. We observed photoconductivity of non-oriented films of polymers and oligomers by Auston switch technique. A...

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Bibliographic Details
Published in:Synthetic metals 1991-05, Vol.41 (3), p.1369-1372
Main Authors: Rentsch, S, Yang, J.P, Li, H.L, Lenzner, M, Bergner, H
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Physicochemistry of polymers
Polymers and radiations
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Summary:Time resolved studies on films and solutions of phenylated poly (phenylene vinylene) s (P-PPV) were performed under irradiation with light pulses of 150 μJ energy and 351 (355) nm wavelengths. We observed photoconductivity of non-oriented films of polymers and oligomers by Auston switch technique. All samples show a picosecond and a nanosecond decay component of the transient conductivity, the estimated mobility was more than one order of magnitude higher than the stationary value. By ps excite- and probe-technique broad transient absorption bands in the visible and NIR were observed after excitation with 6 ps UV light pulses. The decay kinetic alters systematically with the wavelengths. It contains a fast (
ISSN:0379-6779
1879-3290
DOI:10.1016/0379-6779(91)91627-M