Photoluminescence characteristics of tris(2-phenylquinoline)iridium(III) dispersed in an iridium complex host layer

Ayataka Endo; Chihaya Adachi

doi:10.1016/j.cplett.2009.10.064

Photoluminescence characteristics of tris(2-phenylquinoline)iridium(III) dispersed in an iridium complex host layer

Ayataka Endo, Chihaya Adachi

Applied Chemistry

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27 Citations (Scopus)

Abstract

We studied the photoluminescence (PL) characteristics of the red phosphor tris(2-phenylquinoline)iridium(III) (Ir(phq)₃) doped into an Ir complex host layer. Although we expect efficient triplet exciton confinement by the host Ir complexes because of their triplet energy level being higher than that of Ir(phq)₃, we observed a rather low PL quantum efficiency. We clarified that the short Förster energy transfer distance in the host layers resulted in limited energy transfer between host and guest molecules.

Original language	English
Pages (from-to)	224-226
Number of pages	3
Journal	Chemical Physics Letters
Volume	483
Issue number	4-6
DOIs	https://doi.org/10.1016/j.cplett.2009.10.064
Publication status	Published - Dec 1 2009

All Science Journal Classification (ASJC) codes

Physical and Theoretical Chemistry
Physics and Astronomy(all)

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10.1016/j.cplett.2009.10.064

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abstract = "We studied the photoluminescence (PL) characteristics of the red phosphor tris(2-phenylquinoline)iridium(III) (Ir(phq)3) doped into an Ir complex host layer. Although we expect efficient triplet exciton confinement by the host Ir complexes because of their triplet energy level being higher than that of Ir(phq)3, we observed a rather low PL quantum efficiency. We clarified that the short F{\"o}rster energy transfer distance in the host layers resulted in limited energy transfer between host and guest molecules.",

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AU - Adachi, Chihaya

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N2 - We studied the photoluminescence (PL) characteristics of the red phosphor tris(2-phenylquinoline)iridium(III) (Ir(phq)3) doped into an Ir complex host layer. Although we expect efficient triplet exciton confinement by the host Ir complexes because of their triplet energy level being higher than that of Ir(phq)3, we observed a rather low PL quantum efficiency. We clarified that the short Förster energy transfer distance in the host layers resulted in limited energy transfer between host and guest molecules.

AB - We studied the photoluminescence (PL) characteristics of the red phosphor tris(2-phenylquinoline)iridium(III) (Ir(phq)3) doped into an Ir complex host layer. Although we expect efficient triplet exciton confinement by the host Ir complexes because of their triplet energy level being higher than that of Ir(phq)3, we observed a rather low PL quantum efficiency. We clarified that the short Förster energy transfer distance in the host layers resulted in limited energy transfer between host and guest molecules.

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JO - Chemical Physics Letters

JF - Chemical Physics Letters

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Photoluminescence characteristics of tris(2-phenylquinoline)iridium(III) dispersed in an iridium complex host layer

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