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タイトル
Ultrafast femtosecond relaxation processes in luminescent and nonluminescent conducting polymers
著者
Huang, Jiandong D.
Huang, Jiandong D.
Frolov, Sergey V.
Frolov, Sergey V.
Vardeny, Z. Valy
Vardeny, Z. Valy
Chen, W.
Chen, W.
Barton, Thomas J.
Barton, Thomas J.
Sugimoto, R.
Sugimoto, R.
Ozaki, Masanori
Ozaki, Masanori
Yoshino, Katsumi
Yoshino, Katsumi
キーワード等
Femtosecond spectroscopy
Pump-and-probe technique
Luminescent and nonluminescent conducting polymers
PM decay
Polarization memory
Bi-exponential response
内容
Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States
Jiandong D. Huang, Sergey V. Frolov, Z. Valy Vardeny, W. Chen, Thomas J. Barton, R. Sugimoto, Masanori Ozaki, and Katsumi Yoshino "Ultrafast femtosecond relaxation processes in luminescent and nonluminescent conducting polymers", Proc. SPIE 3145, Optical Probes of Conjugated Polymers, (1 December 1997). DOI: https://doi.org/10.1117/12.284153
抄録
We have employed the time-resolved photomodulation (PM) technique to study the photoexcitation dynamics of 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 T1 and T2, where T1 is of order 1 ps and T2 depends on the specific polymer; T2 in Si-PT is about 50 ps, whereas T2 in s-(CH)x is about 5 ps. The difference in T2 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.
公開者
SPIE
掲載誌名
Proceedings of SPIE - The International Society for Optical Engineering
巻
3145
開始ページ
495
終了ページ
506
刊行年月
1997-12-01
ISSN
0277786X
NCID
AA10619755
DOI (出版社版)
info:doi/10.1117/12.284153
URL
http://hdl.handle.net/11094/76954
言語
英語
カテゴリ
会議発表論文 Conference Paper
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著者版フラグ
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text
DCTERMS.bibliographicCitation
Proceedings of SPIE - The International Society for Optical Engineering.3145 P.495-P.506
DC.title
Ultrafast femtosecond relaxation processes in luminescent and nonluminescent conducting polymers
DC.creator
Huang, Jiandong D.
Frolov, Sergey V.
Vardeny, Z. Valy
Chen, W.
Barton, Thomas J.
Sugimoto, R.
Ozaki, Masanori
Yoshino, Katsumi
DC.publisher
SPIE
DC.language" scheme="DCTERMS.RFC1766
英語
DCTERMS.issued" scheme="DCTERMS.W3CDTF
1997-12-01
DC.identifier
info:doi/10.1117/12.284153
DC.identifier" scheme="DCTERMS.URI
http://hdl.handle.net/11094/76954
DC.subject
Femtosecond spectroscopy
Pump-and-probe technique
Luminescent and nonluminescent conducting polymers
PM decay
Polarization memory
Bi-exponential response
DC.description
Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States
Jiandong D. Huang, Sergey V. Frolov, Z. Valy Vardeny, W. Chen, Thomas J. Barton, R. Sugimoto, Masanori Ozaki, and Katsumi Yoshino "Ultrafast femtosecond relaxation processes in luminescent and nonluminescent conducting polymers", Proc. SPIE 3145, Optical Probes of Conjugated Polymers, (1 December 1997). DOI: https://doi.org/10.1117/12.284153
DCTERMS.abstract
We have employed the time-resolved photomodulation (PM) technique to study the photoexcitation dynamics of 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 T1 and T2, where T1 is of order 1 ps and T2 depends on the specific polymer; T2 in Si-PT is about 50 ps, whereas T2 in s-(CH)x is about 5 ps. The difference in T2 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.
citation_title
Ultrafast femtosecond relaxation processes in luminescent and nonluminescent conducting polymers
citation_author
Huang, Jiandong D.
Frolov, Sergey V.
Vardeny, Z. Valy
Chen, W.
Barton, Thomas J.
Sugimoto, R.
Ozaki, Masanori
Yoshino, Katsumi
citation_publisher
SPIE
citation_language
英語
citation_date
1997-12-01
citation_journal_title
Proceedings of SPIE - The International Society for Optical Engineering
citation_volume
3145
citation_firstpage
495
citation_lastpage
506
citation_issn
0277786X
citation_doi
info:doi/10.1117/12.284153
citation_public_url
http://hdl.handle.net/11094/76954
citation_keywords
Femtosecond spectroscopy
Pump-and-probe technique
Luminescent and nonluminescent conducting polymers
PM decay
Polarization memory
Bi-exponential response