Photo- and field-induced charge-separation and phosphorescence quenching in organometallic complex Ir(ppy)3

Mehata, Mohan Singh; Ohta, Nobuhiro

Photo- and field-induced charge-separation and phosphorescence quenching in organometallic complex Ir(ppy)3

Mehata, Mohan Singh; Ohta, Nobuhiro

Applied Physics Letters, 2011, 98(18), 181910

Permalink : https://hdl.handle.net/2115/45543

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アクセス権	open access
URI	https://hdl.handle.net/2115/45543
タイトル	Photo- and field-induced charge-separation and phosphorescence quenching in organometallic complex Ir(ppy)3
著者	著者名 Mehata, Mohan Singh
著者	著者名 Ohta, Nobuhiro
言語	英語
キーワード	dissociation
	iridium compounds
	organometallic compounds
	phosphorescence
	phosphors
	photoexcitation
	photoluminescence
	radiation quenching
	Stark effect
	ultraviolet spectra
	visible spectra
発行日	2011-05-02
出版者	American Institute of Physics
収録物名	Applied Physics Letters
巻(号)	98(18)
ページ	181910
抄録	Electric field effects on absorption and photoluminescence (PL) spectra of organometallic phosphorescent emitter Ir(ppy)3, {tris[2-phenylpyridinato-C2,N] iridium (III)} doped in a film of polymethyl methacrylate (PMMA) have been confirmed at temperatures in the range of 40-295 K. Field-induced quenching of PL observed for Ir(ppy)3 is attributed to the decrease both of emitting state population and of the lifetime of PL. The quenching is independent of excitation energy as well as temperature. Field-assisted charge separation or dissociation of electron-hole (e-h) pair produced by photoexcitation may decrease the population of the emitting state. The Stark shifts on absorption and PL spectra have also been analyzed.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	Copyright 2011 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Appl. Phys. Lett. 98, 181910 (2011) and may be found at https://dx.doi.org/10.1063/1.3582916
PISSN	0003-6951
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1063/1.3582916