High efficiency dual-core materials with 8.38% EQE for organic blue emitters

Seokwoo Kang; Sunwoo Park; Hyocheol Jung; Sangshin Park; Hyukmin Kwon; Jongwook Park

doi:10.1117/12.2567859

21 August 2020 High efficiency dual-core materials with 8.38% EQE for organic blue emitters

Seokwoo Kang, Sunwoo Park, Hyocheol Jung, Sangshin Park, Hyukmin Kwon, Jongwook Park

Proceedings Volume 11473, Organic and Hybrid Light Emitting Materials and Devices XXIV; 114731O (2020) https://doi.org/10.1117/12.2567859
Event: SPIE Organic Photonics + Electronics, 2020, Online Only

Conference Poster

Abstract

Three blue fluorescent materials were newly synthesized by attaching triphenylamine side groups at their ortho, meta, and para positions to a dual core moiety of anthracene and pyrene, two chromophores with good luminous efficiency; these three materials were 2-(6-(10-(2-(diphenylamino)phenyl)anthracen-9-yl)-pyren-1-yl)-N,N-diphenylaniline (o-TPA-AP-TPA), 3-(6-(10-(3-(diphenylamino)phenyl)anthracen-9-yl)pyren-1-yl)-N,N-diphenylaniline (m-TPA-AP-TPA), and 4-(6-(10-(4-(diphenylamino)phenyl)anthracen-9-yl)pyren-1-yl)-N,N-diphenylaniline (p-TPA-AP-TPA), respectively. The optical, thermal, and electroluminescence (EL) properties of the synthesized materials were measured. All three materials were found to be real blue emitters in the solution state and display high PLQY values. A device doped with p-TPA-AP-TPA displayed a very high efficiency of 9.14 cd A-1 and an EQE of 8.38% at a high luminance of 5000 cd m-2

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Seokwoo Kang, Sunwoo Park, Hyocheol Jung, Sangshin Park, Hyukmin Kwon, and Jongwook Park "High efficiency dual-core materials with 8.38% EQE for organic blue emitters", Proc. SPIE 11473, Organic and Hybrid Light Emitting Materials and Devices XXIV, 114731O (21 August 2020); https://doi.org/10.1117/12.2567859

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