https://scholars.lib.ntu.edu.tw/handle/123456789/607048
標題: | Chiral thermally activated delayed fluorescence emitters for circularly polarized luminescence and efficient deep blue OLEDs | 作者: | Huang Z Huang C.-W Tang Y.-K Xiao Z Li N Hua T Cao X Zhou C Wu C.-C Yang C. CHUNG-CHIH WU |
關鍵字: | Aggregation-induced enhanced emission;Chirality;Circularly polarized light;Organic light-emitting diodes;Thermally activated delayed fluorescence;Circular polarization;Fluorescence;Light;Supercomputers;Blue OLEDs;Circularly polarized luminescence;Deep blue;Deep-blue emissions;Enhanced Emission;Molecular design;Simple++;Thermally activated delayed fluorescences;Organic light emitting diodes (OLED);Circular Polarization;Development;Efficiency;Emission;Film;Photoluminescence | 公開日期: | 2022 | 卷: | 197 | 來源出版物: | Dyes and Pigments | 摘要: | The development of the thermally activated delayed fluorescence (TADF) emitters with circularly polarized luminescence (CPL), particularly those exhibiting deep-blue emission is still a formidable challenge. In this work, we reported a simple and easily accessed molecular design strategy for deep-blue circularly polarized TADF (CP-TADF) enantiomers. Two chiral compounds, namely (S)-NPE-AcDPS and (R)-NPE-AcDPS, were successfully designed and synthesized, which featured concurrently TADF, CPL, and aggregation-induced enhanced emission (AIEE) properties. The CPL exhibited a maximum gPL value of 3.0 × 10?4. These emitters exhibited deep blue emission peaking at 451 nm in doped film with a high photoluminescence of 86% and a small singlet-triplet splitting of 0.05 eV. Furthermore, the deep blue OLED based on (S)-NPE-AcDPS demonstrated a high external quantum efficiency (EQE) up to 18.5%. ? 2021 |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85116867373&doi=10.1016%2fj.dyepig.2021.109860&partnerID=40&md5=400b8151b0bcd2b946fec20b5512edec https://scholars.lib.ntu.edu.tw/handle/123456789/607048 |
ISSN: | 01437208 | DOI: | 10.1016/j.dyepig.2021.109860 |
顯示於: | 電機工程學系 |
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