Record-High Efficiency Blue-Green Cationic Ir(III) Complexes for Light-Emitting Electrochemical Cells with EQE Approaching 40.

Yu-Ting Huang, Chung-Chieh Chang, Che-Lun Chang, Wei-Tse Hsu, Yun-Rong Li, Zu-Po Yang, Chin-Wei Lu, Hai-Ching Su

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Article in Inorganic chemistry, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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8 authors.

Yu-Ting HuangDepartment of Applied Chemistry, Providence University, Taichung 43301, Taiwan.

Chung-Chieh ChangInstitute of Lighting and Energy Photonics, National Yang Ming Chiao Tung University, Tainan 71150, Taiwan.

Che-Lun ChangDepartment of Applied Chemistry, Providence University, Taichung 43301, Taiwan.

Wei-Tse HsuInstitute of Photonic System, National Yang Ming Chiao Tung University, Tainan 71150, Taiwan.

Yun-Rong LiDepartment of Applied Chemistry, Providence University, Taichung 43301, Taiwan.

Zu-Po YangInstitute of Photonic System, National Yang Ming Chiao Tung University, Tainan 71150, Taiwan.

Chin-Wei LuDepartment of Applied Chemistry, Providence University, Taichung 43301, Taiwan.ORCID 0000-0003-1516-8685

Hai-Ching SuInstitute of Lighting and Energy Photonics, National Yang Ming Chiao Tung University, Tainan 71150, Taiwan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Light-emitting electrochemical cells (LECs) provide a cost-effective solution for lighting applications and are well-suited for large-area and industrial-scale manufacturing. However, enhancing the efficiency of LECs remains a significant challenge. To address this issue, this study presents a series of blue-green iridium complexes with promising phosphorescent emission properties. Among these, di[1-(2,4-difluorophenyl)-pyrazolyl]-5,5'-difluoro-2,2'-bipyridyl iridium(III) hexafluorophosphate stands out, demonstrating exceptional performance. Following optimizing the device with varying thicknesses, an EQE of 16.8% and a current efficiency of 47.2 cd A

Identifiers

PMID40388199

DOI10.1021/acs.inorgchem.5c00167

PMCPMC12135039

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