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A green emitting iridium(III) complex with narrow emission band and its application to phosphorescence organic light-emitting diodes (OLEDs)
- Authors
- Jung, Sung Ouk; Zhao, Qinghua; Park, Jong-Won; Kim, Seul Ong; Kim, Yun-Hi; Oh, Hyoung-Yun; Kim, Jinho; Kwon, Soon-Ki; Kang, Youngjin
- Issue Date
- Sep-2009
- Publisher
- Elsevier BV
- Keywords
- Organic light-emitting diodes; Phosphorescence; Ir(ppy)(3) derivative; Concentration quenching
- Citation
- Organic Electronics, v.10, no.6, pp 1066 - 1073
- Pages
- 8
- Indexed
- SCIE
SCOPUS
- Journal Title
- Organic Electronics
- Volume
- 10
- Number
- 6
- Start Page
- 1066
- End Page
- 1073
- ISSN
- 1566-1199
1878-5530
- Abstract
- The homoleptic Ir(III) complex, fac-tris{2-(3'-trimethylsilylphenyl)-5-trimethylsilylpyridinato}liridium, has been synthesized and characterized to investigate the effect of the substitution of bulky silyl groups on the photophysical properties and electroluminescence (EL) characteristics of Ir(ppy)(3) (ppy = 2-phenylpyridine). The absorption, emission, cyclic voltammetry and electroluminescent performance of the complex have also been evaluated. A power efficiency of 17.3 lm/W at 10 mA/cm(2) compared to 11.7 lm/W for Ir(ppy)(3) is achieved with the new complex as a dopant in phosphorescent organic light-emitting diodes (OLEDs). In addition, the complex shows a narrow emission band of a small full width at half-maximum (fwhm, ca. 50 nm) value. (C) 2009 Elsevier B.V. All rights reserved.
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