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

Research output: Contribution to journalArticle

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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%.

Original languageEnglish
Pages (from-to)155-157
Number of pages3
JournalChemical Physics Letters
Volume460
Issue number1-3
DOIs
Publication statusPublished - Jul 20 2008

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Phosphors
phosphors
Photoluminescence
Derivatives
solid state
photoluminescence
Photoacoustic spectroscopy
photoacoustic spectroscopy
iridium
Ground state
atomic energy levels
decay rates
ground state
decay
tris(2-phenylpyridine)iridium(III)

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

Measurement of photoluminescence efficiency of Ir(III) phenylpyridine derivatives in solution and solid-state films. / Endo, Ayataka; Suzuki, Kengo; Yoshihara, Toshitada; Tobita, Seiji; Yahiro, Masayuki; Adachi, Chihaya.

In: Chemical Physics Letters, Vol. 460, No. 1-3, 20.07.2008, p. 155-157.

Research output: Contribution to journalArticle

Endo, Ayataka ; Suzuki, Kengo ; Yoshihara, Toshitada ; Tobita, Seiji ; Yahiro, Masayuki ; Adachi, Chihaya. / Measurement of photoluminescence efficiency of Ir(III) phenylpyridine derivatives in solution and solid-state films. In: Chemical Physics Letters. 2008 ; Vol. 460, No. 1-3. pp. 155-157.
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AU - Endo, Ayataka

AU - Suzuki, Kengo

AU - Yoshihara, Toshitada

AU - Tobita, Seiji

AU - Yahiro, Masayuki

AU - Adachi, Chihaya

PY - 2008/7/20

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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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