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 -