Bipolar transport materials for electroluminescence applications |
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| Affiliation: | 1. Institute of Chemistry, Academia Sinica, Taipei 11529, Taiwan;2. Department of Chemistry, National Taiwan Normal University, Taipei, Taiwan;3. Department of Photonics, National Sun Yat-sen University, Kaohsiung 804, Taiwan;1. Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India;2. Centre of Excellence in Nanoelectronics, Indian Institute of Technology Bombay, Mumbai 400076, India;3. National Centre for Photovoltaic Research and Education, Indian Institute of Technology Bombay, Mumbai 400076, India;4. National Centre of Excellence in Technologies for Internal Security, Indian Institute of Technology Bombay, Mumbai 400076, India;1. Department of New Material Chemistry, Korea University, Sejong, 339-700, Republic of Korea;2. Department of Chemistry, Korea National University of Education, Chungbuk, 363-791, Republic of Korea;3. Department of Electronics and Communication, LNMIIT, Jaipur, India;4. Department of Physics, LNMIIT, Jaipur, India;5. JEC Group of Colleges, Jaipur Engineering College, Kukas, Jaipur, India;1. CAS Key Laboratory of Biomedical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Science (CAS), 88 Keling Road, Suzhou 215163, China;2. Institute of Theoretical Chemistry, Jilin University, Changchun 130023, China;3. Department of Chemical and Biomolecular Engineering, Lafayette College, Easton 18042, PA, USA |
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| Abstract: | Benzofuranyl benzene incorporating naphthyl (phenothiazinyl or dimesitylboryl) entities via meta-conjugation have been synthesized. These compounds exhibit bipolar transport characteristic with mobilities in the range of 10?5 to 10?4 cm2/V s at an electric field of 4 × 105 V/cm. The compounds with two naphthyl or dimesitylboryl substituents emit in the violet region with good solution quantum yields. The OLEDs fabricated from the benzofuranyl/dimethylboryl, benzofuranyl/naphthyl and benzofuranyl/dimethylboryl/phenathiazine derivatives have maximum external efficiencies of 1.01%, 1.41% and 3.14%, respectively. |
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| Keywords: | Organic light emitting diode Ambipolar Wide band gap Flurorescence emitter 2 3-benzofuran |
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