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1 February 1992 Characteristics of laser-induced luminescence in poly(paraphenylene)
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Proceedings Volume 1620, Laser Testing and Reliability; (1992) https://doi.org/10.1117/12.56865
Event: SPIE Technical: OPTCON '91, 1991, San Jose, CA, United States
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.
© (1992) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Changqin Jin, Shaozhe Lu, Xi A. Su, and Xing Juan Liu "Characteristics of laser-induced luminescence in poly(paraphenylene)", Proc. SPIE 1620, Laser Testing and Reliability, (1 February 1992); https://doi.org/10.1117/12.56865
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