Cooperative Emission in π-Conjugated Polymer Thin Films

Frolov, S. V.; Gellermann, W.; Ozaki, M.; Yoshino, K.; Vardeny, Z. V.

doi:https://doi.org/10.1103/PhysRevLett.78.729

Cooperative Emission in π-Conjugated Polymer Thin Films

Frolov, S. V.; Gellermann, W.; Ozaki, M. et al.

Physical Review Letters, 1997, 78(4), 729-732

Number of Access:232（2025-09-02 10:19 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/75863

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Title	Cooperative Emission in π-Conjugated Polymer Thin Films
Creator	CreatorName Frolov, S. V.
	CreatorName Gellermann, W.
	NRID 1000050204186 1000050204186 ORCID 0000-0002-9556-4225 0000-0002-9556-4225 researchmap permalink read0014092 read0014092 Scopus Author ID 55490143900 55490143900 CreatorName Ozaki, M.
	NRID 1000070029205 1000070029205 CreatorName Yoshino, K.
	CreatorName Vardeny, Z. V.
Abstract	Picosecond dynamics of exciton emission and absorption have been studied in neat thin films of a variety of poly (phenylene vinylene) derivatives. We found that the stimulated emission band of 120 nm width and ~1 ns duration, which is observed at low exciton density n, collapses at n > 10^17 cm^-3 into a much narrower band of 7 nm width and lifetime t ≪ 10 ps. Based on its excitation intensity dependence, polarization, lifetime, illuminated area, and film thickness dependencies, we assign this narrow band to superfluorescence rather than to amplified spontaneous emission.
Publisher	American Physical Society
Source Title	Physical Review Letters
Volume (Issue)	78(4)
Page	729-732
Date of Issued	1997-01-27
Language	English
Handle URL	https://hdl.handle.net/11094/75863
PISSN	00319007
eISSN	10797114
NCID	AA00773679
Relation.isIdenticalTo	DOI (Publisher Version) https://doi.org/10.1103/PhysRevLett.78.729
Access Rights	open access
CopyRight	Copyright (1997) by the American Physical Society
oaire:version	Version of Record
Category	学術雑誌論文 Journal Article

Resource Type	journal article
Local Type	Journal Article
DCMI Type	Text
DCTERMS.bibliographicCitation	Physical Review Letters. 1997, 78(4), p. 729-732
DC.title	Cooperative Emission in π-Conjugated Polymer Thin Films
DC.creator	Frolov, S. V.
	Gellermann, W.
	Ozaki, M.
	Yoshino, K.
	Vardeny, Z. V.
DC.publisher	American Physical Society
DC.language' scheme='DCTERMS.RFC1766	English
DC.type' scheme='DCTERMS.DCMIType	Text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	1997-01-27
DC.identifier	https://doi.org/10.1103/PhysRevLett.78.729
DCTERMS.abstract	Picosecond dynamics of exciton emission and absorption have been studied in neat thin films of a variety of poly (phenylene vinylene) derivatives. We found that the stimulated emission band of 120 nm width and ~1 ns duration, which is observed at low exciton density n, collapses at n > 10^17 cm^-3 into a much narrower band of 7 nm width and lifetime t ≪ 10 ps. Based on its excitation intensity dependence, polarization, lifetime, illuminated area, and film thickness dependencies, we assign this narrow band to superfluorescence rather than to amplified spontaneous emission.
DC.rights	Copyright (1997) by the American Physical Society
DC.format	75863
citation_title	Cooperative Emission in π-Conjugated Polymer Thin Films
citation_author	Frolov, S. V.
	Gellermann, W.
	Ozaki, M.
	Yoshino, K.
	Vardeny, Z. V.
citation_publisher	American Physical Society
citation_language	English
citation_date	1997-01-27
citation_journal_title	Physical Review Letters
citation_volume	78
citation_issue	4
citation_firstpage	729
citation_lastpage	732
citation_doi	https://doi.org/10.1103/PhysRevLett.78.729
citation_public_url	https://hdl.handle.net/11094/75863

Cooperative Emission in π-Conjugated Polymer Thin Films

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