Intermolecular interaction and a concentration-Quenching mechanism of phosphorescent Ir(III) complexes in a solid film

Yuichiro Kawamura, Jason Brooks, Julie J. Brown, Hiroyuki Sasabe, Chihaya Adachi

研究成果: ジャーナルへの寄稿学術誌査読

321 被引用数 (Scopus)

抄録

Solid-state self-quenching processes of highly efficient Ir(III) phosphorescent emitters are investigated by the measurement of thin film photoluminescence quantum efficiency and transient lifetime as a function of doping concentration in a host matrix. The radiative decay rate constant is found to be independent from the average distance between dopant molecules (R), and the concentration-quenching rate constant is shown to be dependent on R-6. The quenching dependence on R strongly suggests that luminescent concentration quenching in a phosphorescent Ir(III) complex:host film is controlled by dipole-dipole deactivating interactions as described by the Förster energy transfer model.

本文言語英語
論文番号017404
ジャーナルPhysical review letters
96
1
DOI
出版ステータス出版済み - 1月 13 2006

!!!All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)

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