The DOI matches its Crossref record; 2 of the 2 references it cites were found in a registry or an index.
Nanosecond-time-scale delayed fluorescence molecule for deep-blue OLEDs with small efficiency rolloff
Open accessAbstract
Aromatic organic deep-blue emitters that exhibit thermally activated delayed fluorescence (TADF) can harvest all excitons in electrically generated singlets and triplets as light emission. However, blue TADF emitters generally have long exciton lifetimes, leading to severe efficiency decrease, i.e., rolloff, at high current density and luminance by exciton annihilations in organic light-emitting diodes (OLEDs). Here, we report a deep-blue TADF emitter employing simple molecular design, in which an activation energy as well as spin–orbit coupling between excited states with different spin multiplicities, were simultaneously controlled. An extremely fast exciton lifetime of 750 ns was realized in a donor–acceptor-type molecular structure without heavy metal elements. An OLED utilizing this TADF emitter displayed deep-blue electroluminescence (EL) with CIE chromaticity coordinates of (0.14, 0.18) and a high maximum EL quantum efficiency of 20.7%. Further, the high maximum efficiency were retained to be 20.2% and 17.4% even at high luminance.
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Cites
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
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
Cited by
Mamada, M., Hayakawa, M., Ochi, J., & Hatakeyama, T. (2024) · Chemical Society Reviews · doi:10.1039/d3cs00837a · Cited by 482
Wu, X., Ni, S., Wang, C.-H., Zhu, W., & Chou, P.-T. (2025) · Chemical Reviews · doi:10.1021/acs.chemrev.5c00021 · Cited by 325
Metadata
- Authors
- Kim, J. U., Park, I. S., Chan, C.-Y., Tanaka, M., Tsuchiya, Y., Nakanotani, H., & Adachi, C.
- Venue
- Nature Communications
- Published
- 2020-04-14
- Volume
- 11
- Issue
- 1
- Pages
- 1765-1765
- ISSN
- 2041-1723 (ISSN-L)
- OpenAlex
- W3015544408
- Cited by
- 441
- References
- 2
- FWCI
- 24.47
- Type
- journal article
- Language
- en
- Open access
- gold
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- Kim, J. U., Park, I. S., Chan, C.-Y., Tanaka, M., Tsuchiya, Y., Nakanotani, H., & Adachi, C. (2020). Nanosecond-time-scale delayed fluorescence molecule for deep-blue OLEDs with small efficiency rolloff. Nature Communications. https://doi.org/10.1038/s41467-020-15558-5
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