Measurement of photoluminescence efficiency of Ir(III) phenylpyridine derivatives in solution and solid-state films

Ayataka Endo; Kengo Suzuki; Toshitada Yoshihara; Seiji Tobita; Masayuki Yahiro; Chihaya Adachi

doi:10.1016/j.cplett.2008.05.064

Measurement of photoluminescence efficiency of Ir(III) phenylpyridine derivatives in solution and solid-state films

Ayataka Endo, Kengo Suzuki, Toshitada Yoshihara, Seiji Tobita, Masayuki Yahiro, Chihaya Adachi

Functional Materials Chemistry

Research output: Contribution to journal › Article › peer-review

144 Citations (Scopus)

Abstract

We compared the photoluminescence efficiency (Φ_PL) of fac-tris(2-phenylpyridine)iridium (Ir(ppy)₃) and derivatives of it in solution and in doped solid-state films and estimated their radiative and nonradiative decay rates. The green phosphor of Ir(ppy)₃ and blue phosphors of FIrpic, Ir(Fppy)₃, FIr6 showed high Φ_PL values approaching to 100% in both solution and doped solid-state films. On the other hand, the red phosphor of Btp₂Ir(acac) showed lower Φ_PL value less than 40% in both environments. Photoacoustic spectroscopy results indicated that for Btp₂Ir(acac) nonradiative decay from the triplet state to the ground states is 64 ± 8%.

Original language	English
Pages (from-to)	155-157
Number of pages	3
Journal	Chemical Physics Letters
Volume	460
Issue number	1-3
DOIs	https://doi.org/10.1016/j.cplett.2008.05.064
Publication status	Published - Jul 20 2008

All Science Journal Classification (ASJC) codes

General Physics and Astronomy
Physical and Theoretical Chemistry

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10.1016/j.cplett.2008.05.064

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@article{cbb3ccabf72947fea7b6b3aaed308834,

title = "Measurement of photoluminescence efficiency of Ir(III) phenylpyridine derivatives in solution and solid-state films",

abstract = "We compared the photoluminescence efficiency (ΦPL) of fac-tris(2-phenylpyridine)iridium (Ir(ppy)3) and derivatives of it in solution and in doped solid-state films and estimated their radiative and nonradiative decay rates. The green phosphor of Ir(ppy)3 and blue phosphors of FIrpic, Ir(Fppy)3, FIr6 showed high ΦPL values approaching to 100% in both solution and doped solid-state films. On the other hand, the red phosphor of Btp2Ir(acac) showed lower ΦPL value less than 40% in both environments. Photoacoustic spectroscopy results indicated that for Btp2Ir(acac) nonradiative decay from the triplet state to the ground states is 64 ± 8%.",

author = "Ayataka Endo and Kengo Suzuki and Toshitada Yoshihara and Seiji Tobita and Masayuki Yahiro and Chihaya Adachi",

note = "Funding Information: The present work is supported by a Grant-in-Aid for the Global COE Program, {\textquoteleft}Science for Future Molecular Systems{\textquoteright} from the Ministry of Education, Culture, Science, Sports and Technology of Japan.",

year = "2008",

month = jul,

day = "20",

doi = "10.1016/j.cplett.2008.05.064",

language = "English",

volume = "460",

pages = "155--157",

journal = "Chemical Physics Letters",

issn = "0009-2614",

publisher = "Elsevier",

number = "1-3",

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TY - JOUR

T1 - Measurement of photoluminescence efficiency of Ir(III) phenylpyridine derivatives in solution and solid-state films

AU - Endo, Ayataka

AU - Suzuki, Kengo

AU - Yoshihara, Toshitada

AU - Tobita, Seiji

AU - Yahiro, Masayuki

AU - Adachi, Chihaya

N1 - Funding Information: The present work is supported by a Grant-in-Aid for the Global COE Program, ‘Science for Future Molecular Systems’ from the Ministry of Education, Culture, Science, Sports and Technology of Japan.

PY - 2008/7/20

Y1 - 2008/7/20

N2 - We compared the photoluminescence efficiency (ΦPL) of fac-tris(2-phenylpyridine)iridium (Ir(ppy)3) and derivatives of it in solution and in doped solid-state films and estimated their radiative and nonradiative decay rates. The green phosphor of Ir(ppy)3 and blue phosphors of FIrpic, Ir(Fppy)3, FIr6 showed high ΦPL values approaching to 100% in both solution and doped solid-state films. On the other hand, the red phosphor of Btp2Ir(acac) showed lower ΦPL value less than 40% in both environments. Photoacoustic spectroscopy results indicated that for Btp2Ir(acac) nonradiative decay from the triplet state to the ground states is 64 ± 8%.

AB - We compared the photoluminescence efficiency (ΦPL) of fac-tris(2-phenylpyridine)iridium (Ir(ppy)3) and derivatives of it in solution and in doped solid-state films and estimated their radiative and nonradiative decay rates. The green phosphor of Ir(ppy)3 and blue phosphors of FIrpic, Ir(Fppy)3, FIr6 showed high ΦPL values approaching to 100% in both solution and doped solid-state films. On the other hand, the red phosphor of Btp2Ir(acac) showed lower ΦPL value less than 40% in both environments. Photoacoustic spectroscopy results indicated that for Btp2Ir(acac) nonradiative decay from the triplet state to the ground states is 64 ± 8%.

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U2 - 10.1016/j.cplett.2008.05.064

DO - 10.1016/j.cplett.2008.05.064

M3 - Article

AN - SCOPUS:47049122441

SN - 0009-2614

VL - 460

SP - 155

EP - 157

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 1-3

ER -

Measurement of photoluminescence efficiency of Ir(III) phenylpyridine derivatives in solution and solid-state films

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