DOI: 10.1063/1.1384903. Highly efficient electroluminescent materials based on fluorinated organometallic iridium compounds

Highly efficient electroluminescent materials based on fluorinated organometallic iridium compounds

10.1063/1.1384903

Crossref journal-article

AIP Publishing

Applied Physics Letters (317)

Abstract

We report a class of highly efficient electroluminescent materials based on fluorinated iridium compounds. Using aluminum as the cathode, a device, using fac-tris[5-fluoro-2(5-trifluoromethyl-2-pyridinyl)phenyl-C,N]iridium (Ir-2h) as the luminescent layer, displayed intense electroluminescence at 525 nm with an efficiency of 20 cd/A and a maximum radiance of 4800 cd/m2. Differing from the previously reported Ir(ppy)3, Ir-2h can be used in the undiluted form without the use of a charge-transporting host. This indicates that Ir-2h by itself has good enough charge-transporting properties. Photoluminescence studies at room temperature and 77 K revealed that electroluminescence originates from the metal-to-ligand charge transfer state with a quantum yield of 0.56 for Ir-2h and 0.5 for Ir(ppy)3 in toluene at room temperature. In the thin-film form, photoluminescence quantum yield of Ir-2h is a factor of 10 greater than that of Ir(ppy)3 due to the larger self-quenching effect of Ir(ppy)3.

Bibliography

Wang, Y., Herron, N., Grushin, V. V., LeCloux, D., & Petrov, V. (2001). Highly efficient electroluminescent materials based on fluorinated organometallic iridium compounds. Applied Physics Letters, 79(4), 449â451.

Authors 5

Y. Wang (first)
N. Herron (additional)
V. V. Grushin (additional)
D. LeCloux (additional)
V. Petrov (additional)

References 16 Referenced 260

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{'key': '2024020320283016100_r2'}
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Dates

Type	When
Created	23 years, 1 month ago (July 26, 2002, 8:44 a.m.)
Deposited	1 year, 6 months ago (Feb. 3, 2024, 3:28 p.m.)
Indexed	1 month ago (Aug. 2, 2025, 12:58 a.m.)
Issued	24 years, 1 month ago (July 23, 2001)
Published	24 years, 1 month ago (July 23, 2001)
Published Print	24 years, 1 month ago (July 23, 2001)

Funders 0

None

BibTeX

@article{Wang_2001, title={Highly efficient electroluminescent materials based on fluorinated organometallic iridium compounds}, volume={79}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.1384903}, DOI={10.1063/1.1384903}, number={4}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Wang, Y. and Herron, N. and Grushin, V. V. and LeCloux, D. and Petrov, V.}, year={2001}, month=jul, pages={449–451} }

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