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100% phosphorescence quantum efficiency of Ir(III) complexes in organic semiconductor films
Open accessAbstract
We demonstrate that three Ir(III) complexes used as principal dopants in organic electrophosphorescent diodes have very high photoluminescence quantum efficiency (ηPL) in a solid-state film. The green emitting complex, fac-tris(2-phenylpyridinato)iridium(III) [Ir(ppy)3], the red-emitting bis[2-(2′-benzothienyl)pyridinato-N,C3′] (acetylacetonato)iridium(III) [Btp2Ir(acac)], and the blue complex bis[(4,6-difluorophenyl)pyridinato-N,C2](picolinato)iridium(III) (FIrpic) were prepared as codeposited films of varying concentration with 4,4′-bis(N-carbazolyl)-2,2′-biphenyl, a commonly used host material. The maximum ηPL values for Ir(ppy)3, Btp2Ir(acac), and FIrpic were, respectively, 97%±2% (at 1.5mol%), 51%±1% (at 1.4mol%), and 78%±1% (at 15mol%). Furthermore, we also observed that the maximum ηPL of FIrpic reached 99%±1% when doped into the high triplet energy host, m-bis(N-carbazolyl)benzene, at an optimal concentration of 1.2mol%.
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Cited by
Aggregation‐Induced Emission: The Whole Is More Brilliant than the Parts
Mei, J., Hong, Y., Lam, J. W. Y., Qin, A., Tang, Y., & Tang, B. Z. (2014) · Advanced Materials · doi:10.1002/adma.201401356 · Cited by 3,381
Recent Developments in the Application of Phosphorescent Iridium(III) Complex Systems
Ulbricht, C., Beyer, B., Friebe, C., Winter, A., & Schubert, U. S. (2009) · Advanced Materials · doi:10.1002/adma.200803537 · Cited by 746
Hosokai, T., Matsuzaki, H., Nakanotani, H., Tokumaru, K., Tsutsui, T., Furube, A., Nasu, K., Nomura, H., Yahiro, M., & Adachi, C. (2017) · Science Advances · doi:10.1126/sciadv.1603282 · Cited by 365
Self-citationKim, J. H., Yun, J. H., & Lee, J. Y. (2018) · Advanced Optical Materials · doi:10.1002/adom.201800255 · Cited by 314
Salla, C. A. M., Farias, G., Rouzières, M., Dechambenoit, P., Durola, F., Bock, H., de Souza, B., & Bechtold, I. H. (2019) · Angewandte Chemie International Edition · doi:10.1002/anie.201901672 · Cited by 120
Metadata
- Authors
- Kawamura, Y., Goushi, K., Brooks, J., Brown, J. J., Sasabe, H., & Adachi, C.
- Venue
- Applied Physics Letters
- Publisher
- AIP Publishing
- Published
- 2005-02-08
- Volume
- 86
- Issue
- 7
- ISSN
- 0003-6951 (ISSN-L)
- 1077-3118
- OpenAlex
- W1983480226
- Cited by
- 738
- References
- 0
- FWCI
- 31.46
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Kawamura, Y., Goushi, K., Brooks, J., Brown, J. J., Sasabe, H., & Adachi, C. (2005). 100% phosphorescence quantum efficiency of Ir(III) complexes in organic semiconductor films. Applied Physics Letters. https://doi.org/10.1063/1.1862777
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