Erratum: Diarylboron-Based Asymmetric Red-Emitting Ir(III) Complex for Solution-Processed Phosphorescent Organic Light-Emitting Diode with External Quantum Efficiency above 28.

Xiaolong Yang,Haoran Guo,Zhaoxin Wu,Boao Liu,Guijiang Zhou,Jiang Zhao,Wai‐Yeung Wong

doi:10.1002/advs.201800950

Abstract

[This corrects the article DOI: 10.1002/advs.201701067.].

Highlights

Organic light-emitting diodes (OLEDs) are one of the most promising techlighting sources.[1,2,3] In the development of OLEDs, the most important issue is the nologies for future displays and lighting
Even based on elaborately designed bipolar host materials and sophisticated device structures, only sev-. These results demonstrate that the asymmetric diarylboron-based Ir(III) comeral most efficient vacuum-deposited red plexes have great potential for fabricating high-performance red OLEDs
The syntheses of these diarylboron-based Ir(III) complexes were similar to the common methods reported for other heteroleptic Ir(III) complexes except the solvents used here were the mixture of THF and H2O rather than the conventional used mixture of 2-ethoxyethanol and H2O.[30]

Summary

FULL PAPER

Diarylboron-Based Asymmetric Red-Emitting Ir(III) Complex for Solution-Processed Phosphorescent Organic Light-Emitting Diode with External Quantum Efficiency above 28%. We reported a diarylboron-based red-emitting Ir(III) complex [bis(5-(dimesitylboranyl)-2-phenylpyridine)Ir(III)(acetylacetonate), Ir-B-1] showing high PLQY of 0.95 in CH2Cl2, which is among the highest PLQYs reported for red-emitting Ir(III) complexes.[24] The enhanced PLQY could be attributed to the incorporation of electron-deficient diarylboron group into the pyridine ring, which could increase the mixing of the MLCT state and the triplet ligand-centered (3LC) state of the complex.[25] the electron-deficient diarylboron group could improve the electron-transporting ability of the resultant complex.[24,26] a conventional vacuum-deposited OLED using Ir-B-1 as emitter could show high EQE of 14.7% with low efficiency rolloff, which is much better than the control device (EQE = 6.0%) based on (MDQ)2Ir(acac).[24] Ir-B-1 shows relatively poor solubility in common organic solvents, which makes it unsuitable for fabricating OLEDs with solution-processed method. The solutionprocessed red OLED based on BPyThIr shows an extremely high EQE of 28.5%, which is the highest record for the solution-processed red OLED to date.[17,18,19] In addition, the operation lifetime of the device using BPyThIr as emitter is significantly improved over 30% compared to the device based on (MDQ)2Ir(acac)

Results and Discussion

Conclusion

Conflict of Interest