Ultrafast femtosecond relaxation processes in luminescent and nonluminescent conducting polymers

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Publication Type Journal Article
School or College College of Science
Department Physics
Creator Vardeny, Zeev Valentine
Other Author Huang, J. D.; Frolov, S. V.; Chen, W.; Barton, T. J.; Sugimoto, R.; Ozaki, M.; Yoshino, K.
Title Ultrafast femtosecond relaxation processes in luminescent and nonluminescent conducting polymers
Date 1997
Description We have employed the time-resolved photomodulation (PM) technique to study the photoexcitation dynamics in a luminescent (Si-PT) and nonluminescent ( s-(CH)x ) conducting polymers in the low signal limit. In each polymer, we identify two exponential decay processes in the PM decay, with characteristic time constants T] and where T] is of order 1 ps and T2 depends on the specific polymer; T 2 in Si-PT is about 50ps, whereas T 2 in s-(CH)x is about 5ps. The difference in T 2 is tentatively attributed to radiative and non-radiative recombination kinetics, respectively. We also found that the PM decay does not show any obvious temperature and intensity dependences, whereas the polarization memory decay is longer at low temperatures.
Type Text
Publisher International Society for Optical Engineering (SPIE)
Volume 3145
First Page 495
Last Page 506
DOI 10.1117/12.284153
citatation_issn 0277786X
Subject Ultrafast femtosecond relaxation; Femtosecond spectroscopy; Pump-and-probe technique; PM decay; Polarization memory; Bi-exponential response
Subject LCSH Picosecond pulses; Conducting polymers -- Optical properties
Language eng
Conference Title Optical Probes of Conjugated Polymers; Monday 28 July 1997; San Diego, CA, USA
Bibliographic Citation Huang, J. D., Frolov, S. V., Vardeny, Z. V., Chen, W., Barton, T. J., Sugimoto, R., Ozaki, M., & Yoshino, K. (1997). Ultrafast femtosecond relaxation processes in luminescent and nonluminescent conducting polymers. SPIE, 3145, 495-506.
Rights Management (c)Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic electronic or print reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. http://dx.doi.org/10.1117/12.284153
Format Medium application/pdf
Format Extent 1,473,057 bytes
Identifier ir-main,9872
ARK ark:/87278/s6z03smx
Setname ir_uspace
Date Created 2012-06-13
Date Modified 2021-05-06
ID 705905
Reference URL https://collections.lib.utah.edu/ark:/87278/s6z03smx
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