Ultrafast femtosecond relaxation processes in luminescent and nonluminescent conducting polymers

Huang, Jiandong D.; Frolov, Sergey V.; Vardeny, Z. Valy; Chen, W.; Barton, Thomas J.; Sugimoto, R.; Ozaki, Masanori; Yoshino, Katsumi

doi:info:doi/10.1117/12.284153

このアイテムのアクセス数:16件（2021-03-06 02:12 集計）

このアイテムへのリンクには次のURLをご利用ください:http://hdl.handle.net/11094/76954

閲覧可能ファイル

ファイル	フォーマット	サイズ	閲覧回数	説明
ProcSPIE_3145_495	pdf	463 KB	22

論文情報

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
内容	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

著者版フラグ	publisher
NII資源タイプ	会議発表論文
ローカル資源タイプ	会議発表論文
dcmi資源タイプ	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
DC.description	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

閲覧可能ファイル

論文情報

論文詳細を表示