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Proceedings Paper

Characteristics of laser-induced luminescence in poly(paraphenylene)
Author(s): Changqin Jin; Shaozhe Lu; Xi A. Su; Xing Juan Liu
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Paper Abstract

Under laser inducement, we have observed steady state photoluminescence from poly(paraphenylene) and transient photoliininescence from PPP in nanosecond time regime for the first time. PPP samples studied were produced using the Kovacic method. The experimental results indicate that the lininescence spectra are well-resolved. The peaks are rather sharp and located at 4340Å(100K), 4332Å(50K), 4318Å(8.5K) (transient state) and 4309Å, 4575Å (steady state). The luminescence spectra have been discussed by using the lattice relaxation process. The lifetime of the luminescence of PPP was measured. The decay curve of PPP is found to have a double exponential form with a lifetime of 7.47 ns and 5.13 ns. The decay kinetics was interpreted by the interchain recombination of photoexcited polaron pairs. The decay kinetics of photoinduced absorption between a few nanoseconds and a few microseconds is mainly due to the interchain recombination of the photoexcited polaron pairs and exhibits the radiative luminescence after relaxation.

Paper Details

Date Published: 1 February 1992
PDF: 7 pages
Proc. SPIE 1620, Laser Testing and Reliability, (1 February 1992); doi: 10.1117/12.56865
Show Author Affiliations
Changqin Jin, Changchun Institute of Physics (China)
Shaozhe Lu, Changchun Institute of Physics (China)
Xi A. Su, Changchun Institute of Physics (China)
Xing Juan Liu, Jilin Univ. (China)

Published in SPIE Proceedings Vol. 1620:
Laser Testing and Reliability
David L. Begley; S. C. Wang, Editor(s)

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