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Very high-efficiency green organic light-emitting devices based on electrophosphorescence
Abstract
We describe the performance of an organic light-emitting device employing the green electrophosphorescent material, fac tris(2-phenylpyridine) iridium [Ir(ppy)3] doped into a 4,4′-N,N′-dicarbazole-biphenyl host. These devices exhibit peak external quantum and power efficiencies of 8.0% (28 cd/A) and 31 lm/W, respectively. At 100 cd/m2, the external quantum and power efficiencies are 7.5% (26 cd/A) and 19 lm/W at an operating voltage of 4.3 V. This performance can be explained by efficient transfer of both singlet and triplet excited states in the host to Ir(ppy)3, leading to a high internal efficiency. In addition, the short phosphorescent decay time of Ir(ppy)3 (<1 μs) reduces saturation of the phosphor at high drive currents, yielding a peak luminance of 100 000 cd/m2.
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Citations
Cited by
Electron Transport Materials for Organic Light-Emitting Diodes
Kulkarni, A. P., Tonzola, C. J., Babel, A., & Jenekhe, S. A. (2004) · Chemistry of Materials · doi:10.1021/cm049473l · Cited by 1,624
Tsuboyama, A., Iwawaki, H., Furugori, M., Mukaide, T., Kamatani, J., Igawa, S., Moriyama, T., Miura, S., Takiguchi, T., Okada, S., et al. (2003) · Journal of the American Chemical Society · doi:10.1021/ja034732d · Cited by 1,312
You, Y., & Nam, W. (2012) · Chemical Society Reviews · doi:10.1039/c2cs35171d · Cited by 668
Doping of organic semiconductors
Lüssem, B., Riede, M., & Leo, K. (2013) · physica status solidi (a) · doi:10.1002/pssa.201228310 · Cited by 594
Bright Light‐Emitting Diodes Based on Organometal Halide Perovskite Nanoplatelets
Ling, Y., Yuan, Z., Tian, Y., Wang, X., Wang, J. C., Xin, Y., Hanson, K., Ma, B., & Gao, H. (2016) · Advanced Materials · doi:10.1002/adma.201503954 · Cited by 513
Metadata
- Authors
- Baldo, M. A., Lamansky, S., Burrows, P. E., Thompson, M. E., & Forrest, S. R.
- Venue
- Applied Physics Letters
- Publisher
- AIP Publishing
- Published
- 1999-07-05
- Volume
- 75
- Issue
- 1
- Pages
- 4-6
- ISSN
- 0003-6951 (ISSN-L)
- 1077-3118
- OpenAlex
- W2878404963
- Cited by
- 2,864
- References
- 0
- FWCI
- 60.96
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Very high-efficiency green organic light-emitting devices based on electrophosphorescence. https://app.cochat.ai/papers/10.1063/1.124258
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- Baldo, M. A., Lamansky, S., Burrows, P. E., Thompson, M. E., & Forrest, S. R. (1999). Very high-efficiency green organic light-emitting devices based on electrophosphorescence. Applied Physics Letters. https://doi.org/10.1063/1.124258
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