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

被引：131

作者：

Endo, Ayataka ^{[1
,2
]}

Suzuki, Kengo ^{[3
]}

Yoshihara, Toshitada ^{[4
]}

Tobita, Seiji ^{[4
]}

Yahiro, Masayuki ^{[1
,2
]}

Adachi, Chihaya ^{[1
,2
]}

机构：

[1] Kyushu Univ, Ctr Future Chem, Fukuoka 8190395, Japan

[2] Japan Sci & Technol Agcy, Crest Program, Tokyo 1500011, Japan

[3] Hamamatsu Photon KK, Shizuoka 4313196, Japan

[4] Gunma Univ, Dept Chem, Gunma 3768515, Japan

来源：

CHEMICAL PHYSICS LETTERS | 2008年 / 460卷 / 1-3期

关键词：

D O I：

10.1016/j.cplett.2008.05.064

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We compared the photoluminescence efficiency (Phi(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 Phi(PL) values approaching to 100% in both solution and doped solid-state films. On the other hand, the red phosphor of Btp(2)Ir(acac) showed lower Phi(PL) value less than 40% in both environments. Photoacoustic spectroscopy results indicated that for Btp(2)Ir(acac) nonradiative decay from the triplet state to the ground states is 64 +/- 8%. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：155 / 157

页数：3

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