Highly efficient pure organic near-ultraviolet (NUV) electro-fluorescent materials with high electron mobility and improved hole mobility.
| Autor: | Zhou H; Key Laboratory of Rubber-Plastics of the Ministry of Education, School of Polymer Science & Engineering, Qingdao University of Science and Technology Qingdao 266042 P. R. China sfxue@qust.edu.cn., Wang R; Key Laboratory of Rubber-Plastics of the Ministry of Education, School of Polymer Science & Engineering, Qingdao University of Science and Technology Qingdao 266042 P. R. China sfxue@qust.edu.cn., Sun M; Key Laboratory of Rubber-Plastics of the Ministry of Education, School of Polymer Science & Engineering, Qingdao University of Science and Technology Qingdao 266042 P. R. China sfxue@qust.edu.cn., Zhou Y; Key Laboratory of Rubber-Plastics of the Ministry of Education, School of Polymer Science & Engineering, Qingdao University of Science and Technology Qingdao 266042 P. R. China sfxue@qust.edu.cn., Zhang L; Key Laboratory of Rubber-Plastics of the Ministry of Education, School of Polymer Science & Engineering, Qingdao University of Science and Technology Qingdao 266042 P. R. China sfxue@qust.edu.cn., Song J; Key Laboratory of Rubber-Plastics of the Ministry of Education, School of Polymer Science & Engineering, Qingdao University of Science and Technology Qingdao 266042 P. R. China sfxue@qust.edu.cn., Sun Q; Key Laboratory of Rubber-Plastics of the Ministry of Education, School of Polymer Science & Engineering, Qingdao University of Science and Technology Qingdao 266042 P. R. China sfxue@qust.edu.cn., Zhang ST; State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, College of Chemistry, Jilin University Changchun 130012 P. R. China stzhang@jlu.edu.cn., Yang W; Key Laboratory of Rubber-Plastics of the Ministry of Education, School of Polymer Science & Engineering, Qingdao University of Science and Technology Qingdao 266042 P. R. China sfxue@qust.edu.cn., Xue S; Key Laboratory of Rubber-Plastics of the Ministry of Education, School of Polymer Science & Engineering, Qingdao University of Science and Technology Qingdao 266042 P. R. China sfxue@qust.edu.cn. |
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| Jazyk: | angličtina |
| Zdroj: | Chemical science [Chem Sci] 2024 Oct 09. Date of Electronic Publication: 2024 Oct 09. |
| DOI: | 10.1039/d4sc05625f |
| Abstrakt: | The lack of blue-emissive materials with high efficiency and excellent color purity commonly represents a pivotal obstacle in the development of organic light-emitting diodes (OLEDs). In this work, two blue to near-ultraviolet (NUV) donor-π-acceptor (D-π-A) emitters based on a fluorene π-bridge, 9-PCZCFTZ and 3-PCZCFTZ, are thus designed and synthesized, and non-doped devices derived from these two materials exhibit electroluminescence (EL) emission peaks at 404 nm and 417 nm, respectively. Interestingly, due to the specific stacking, a phenomenon appears in both materials in which the mobility of the electron is much higher than that of the hole, prompting us to use host doping to increase the hole mobilities, which ultimately leads to excellent OLED performances. As a result, the maximum external quantum efficiency (EQE Competing Interests: There are no conflicts to declare. (This journal is © The Royal Society of Chemistry.) |
| Databáze: | MEDLINE |
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