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Bright blue organic light-emitting diode with improved color purity using a LiF/Al cathode
Abstract
We report a two-layer, blue organic light-emitting diode with a 4,4′-bis(2,2-diphenylvinyl)-1,1′-biphenyl emission layer and a LiF/Al cathode which has an external quantum efficiency of 1.4% and a maximum luminance of 3000 cd/m2. Insertion of the thin LiF layer results in a 50-fold increase in the device efficiency compared to a device with an aluminum only cathode, and eliminates the need for an electron-transporting layer, such as tris(8-hydroxyquinoline)aluminum. This results in a device with excellent color purity with an emission peak at 476 nm and a full width at half maximum of 78 nm. Using ultraviolet photoelectron spectroscopy, we find that the effective work-function of aluminum decreases dramatically with sub-monolayer amounts of LiF deposited on the surface.
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Citations
Cited by
Conjugated Polymer-Based Organic Solar Cells
Günes, S., Neugebauer, H., & Sariciftci, N. S. (2007) · Chemical Reviews · doi:10.1021/cr050149z · Cited by 6,279
Novel Electroluminescent Conjugated Polyelectrolytes Based on Polyfluorene
Huang, F., Wu, H., Wang, D., Yang, W., & Cao, Y. (2004) · Chemistry of Materials · doi:10.1021/cm034650o · Cited by 632
Metadata
- Authors
- Shaheen, S. E., Jabbour, G. E., Morrell, M. M., Kawabe, Y., Kippelen, B., Peyghambarian, N., Nabor, M.-F., Schlaf, R., Mash, E. A., & Armstrong, N. R.
- Venue
- Journal of Applied Physics
- Publisher
- AIP Publishing
- Published
- 1998-08-15
- Volume
- 84
- Issue
- 4
- Pages
- 2324-2327
- ISSN
- 0021-8979 (ISSN-L)
- 1089-7550
- OpenAlex
- W1989415979
- Cited by
- 290
- References
- 0
- FWCI
- 18.97
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Bright blue organic light-emitting diode with improved color purity using a LiF/Al cathode. https://app.cochat.ai/papers/10.1063/1.368299
- The paper
- Shaheen, S. E., Jabbour, G. E., Morrell, M. M., Kawabe, Y., Kippelen, B., Peyghambarian, N., Nabor, M.-F., Schlaf, R., Mash, E. A., & Armstrong, N. R. (1998). Bright blue organic light-emitting diode with improved color purity using a LiF/Al cathode. Journal of Applied Physics. https://doi.org/10.1063/1.368299
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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