3-Aryl substituted 9-alkylcarbazoles as tailored building blocks for hole transporting materials of OLEDs
| Autor: | Y.L. Chen, J.V. Grazulevicius, D. Mazetyte, Y.C. Hsieh, R. Griniene, Gintare Krucaite, Saulius Grigalevicius, G. Puckyte, Jwo-Huei Jou |
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| Rok vydání: | 2012 |
| Předmět: |
Brightness
Materials science business.industry Carbazole Mechanical Engineering Aryl Metals and Alloys Analytical chemistry Condensed Matter Physics Electronic Optical and Magnetic Materials law.invention chemistry.chemical_compound chemistry PEDOT:PSS Mechanics of Materials law Materials Chemistry OLED Optoelectronics Ionization energy business Common emitter Light-emitting diode |
| Zdroj: | Synthetic Metals. 162:1079-1083 |
| ISSN: | 0379-6779 |
| DOI: | 10.1016/j.synthmet.2012.04.033 |
| Popis: | 4-Fluorophenyl, phenyl or naphthyl substituted 9-alkylcarbazoles were synthesized by the multi-step synthetic route. The materials were characterized by elemental analyses, mass and 1H NMR spectroscopy as well as by electron photoemission technique. These derivatives were tested for hole injecting and transporting layers in OLEDs with Alq3 as the emitter. The 3-(1-naphthyl)-9-ethylcarbazole-based OLED exhibited the best performance with a turn-on voltage of ∼3 V, a maximal current efficiency of 0.85 cd/A and maximum brightness of 1270 cd/m2. The device was modified with PEDOT:PSS hole injection layer and demonstrated lower turn-on voltage of ca. 3.0 V, combined with a maximum brightness of 9524 cd/m2 and a maximum photometric efficiency of ca. 5 cd/A. |
| Databáze: | OpenAIRE |
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