The DOI matches its Crossref record; 10 of the 10 references it cites were found in a registry or an index.
Organic Light‐Emitting Diodes with 30% External Quantum Efficiency Based on a Horizontally Oriented Emitter
Abstract
High‐efficiency phosphorescent organic light‐emitting diodes (OLEDs) doped with Ir(ppy)2(acac) [bis(2‐phenylpyridine)iridium(III)‐acetylacetonate] in an exciplex forming co‐host have been optically analyzed. This emitter has a preferred orientation with the horizontal to vertical dipole ratio of 0.77:0.23 as compared to 0.67:0.33 in the isotropic case. Theoretical analysis based on the orientation factor (Θ, the ratio of the horizontal dipoles to total dipoles) and the photoluminescence quantum yield (qPL) of the emitter predicts that the maximum external quantum efficiency (EQE) of the OLEDs with this emitter is about 30%, which matches very well with the experimental data, indicating that the electrical loss of the OLEDs is negligible and the device structure can be utilized as a platform to demonstrate the validity of optical modeling. Based on the results, the maximum EQE achievable for a certain emitting dye in a host can be predicted by just measuring qPL and Θ in a neat film on glass without the need to fabricate devices, which offers a universal plot of the maximum EQE as a function of qPL and Θ.
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Cites
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Self-citationOriented phosphorescent emitters boost OLED efficiency
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Recent advances in organic thermally activated delayed fluorescence materials
Yang, Z., Mao, Z., Xie, Z., Zhang, Y., Liu, S., Zhao, J., Xu, J., Chi, Z., & Aldred, M. P. (2017) · Chemical Society Reviews · doi:10.1039/c6cs00368k · Cited by 2,395
All-organic thermally activated delayed fluorescence materials for organic light-emitting diodes
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Samanta, P. K., Kim, D., Coropceanu, V., & Brédas, J.-L. (2017) · Journal of the American Chemical Society · doi:10.1021/jacs.6b12124 · Cited by 1,025
Metadata
- Authors
- Kim, S., Jeong, W., Mayr, C., Park, Y., Kim, K., Lee, J., Moon, C., Brütting, W., & Kim, J.
- Venue
- Advanced Functional Materials
- Publisher
- Wiley
- Published
- 2013-03-27
- Volume
- 23
- Issue
- 31
- Pages
- 3896-3900
- ISSN
- 1616-301X (ISSN-L)
- 1616-3028
- OpenAlex
- W1999868737
- Cited by
- 573
- References
- 10
- FWCI
- 29.96
- Type
- journal article
- Language
- en
- Open access
- closed
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- Kim, S., Jeong, W., Mayr, C., Park, Y., Kim, K., Lee, J., Moon, C., Brütting, W., & Kim, J. (2013). Organic Light‐Emitting Diodes with 30% External Quantum Efficiency Based on a Horizontally Oriented Emitter. Advanced Functional Materials. https://doi.org/10.1002/adfm.201300104
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