Color stable white organic light-emitting diode based on a novel triazine derivative |
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| Affiliation: | 1. Department of Physical Chemistry and Technology of Polymers, Silesian University of Technology, ul. M. Strzody 9, 44-100 Gliwice, Poland;2. Institute of Organic and Macromolecular Chemistry, Friedrich-Schiller University Jena, Humboldstrasse 10, D-07743 Jena, Germany;3. Geoscience Centre of the University of Göttingen, Department of Applied Geology, Goldschmidtstr. 3, 37077 Göttingen, Germany;4. Institut für Chemie und Biochemie, Physikalische und Theoretische Chemie, Freie Universität Berlin, Takustr. 3, D-14195 Berlin, Germany;5. Centre of Polymer and Carbon Materials, Polish Academy of Sciences, ul. M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland;1. Institute of Polymer Materials, School of Materials Science & Engineering, Jiangsu University, Zhenjiang, Jiangsu Province, 212013, PR China;2. College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, PR China;1. Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, Campus de la UAB, 08193 Bellaterra, Spain;2. Accurion GmbH, Stresemannstraße 30, 37079 Göttingen, Germany;3. ICREA, Passeig Lluís Companys 23, 08010 Barcelona, Spain;4. Instituto de Ciencia de Materiales de Madrid (ICMM-CSIC), Sor Juana Inés de la Cruz 3, Cantoblanco, 28049 Madrid, Spain;1. Institute of Physics, Jilin University, Changchun 130012, China;2. Institute of Physics, Jilin Normal University, Siping 136000, China;3. Institute of Physics, Northeast Normal University, Changchun 130012, China;1. College of Chemistry and Chemical Engineering, Liaoning Normal University, Huanghe Road 850#, Dalian 116029, PR China;2. Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin 541004, PR China;3. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, PR China |
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| Abstract: | A novel red–orange emitting material with a branched molecular structure, 2,4,6-tris2-(N-ethyl-3-carbazole)carboxethenyl]-1,3,5-s-triazine (TC3), has been synthesized and characterized using UV–visible, photoluminescence (PL) and electroluminescence (EL) spectroscopy. White EL devices were fabricated using TC3 as a red–orange emitter and 8-hydroxyquinolinolato lithium (Liq) as a blue–green emitter. N,N-bis(3-methylphenyl)-N,N-diphenylbenzidine (TPD) as the adjustor for charge carrier mobility was introduced between the two emitting layers to improve the stability of the white emission color on bias voltage. The EL devices of ITO/poly(N-vinylcarbazole) (PVK):TC3 (56 nm)/TPD (5 nm)/Liq (30 nm)/Mg:Ag exhibited good quality white emission. The Commission Internationale De L’Eclairage chromaticity coordinates are (0.34, 0.39) and are stable on the bias voltage. |
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