| Title |
Naujų karbazolo darinių, turinčių 10H-fentiazino, trifenilsilano, fosfonil-4-metilbenzeno ir benznitrilo fragmentus, sintezė, savybių tyrimai ir pritaikymas organiniuose šviestukuose / |
| Translation of Title |
Synthesis, studies and application in OLEDs of new carbazole derivatives, containing 10H-phenothiazine, triphenylsilane, sulfonyl-4-methylbenzene and benzonitrile moieties. |
| Authors |
Grybauskaitė-Kaminskienė, Gintarė |
| Full Text |
|
| Pages |
35 |
| Keywords [eng] |
carbazole ; organic-light-emitting-diodes ; delayed fluorescence ; host ; emitter |
| Abstract [eng] |
The aim of this work is design, synthesis, evaluation of the properties and estimation of applicability in OLEDs of newly synthesized derivatives of carbazole. The dissertation reviews the recent literature on organic light-emitting diodes with structures containing bicarbazole, acridine, and phenoxazine moieties, evaluating their efficiency prospects. The paper describes the synthesis of novel 9-ethyl-9H-carbazole, bicarbazole and carbazole derivatives containing 10H-phentiazine, triphenylsilane, phosphonyl-4-methylbenzene and benzonitrile moieties and provides a detailed analysis of the properties. Simple and efficient synthesis methods have been selected for the synthesis of the target compounds. The investigation of their thermal, optical, photophysical, electrochemical, photoelectrical and charge transporting properties have been investigated using not only experimental but also computer modeling methods. The best-performing materials have been tested on organic light-emitting diodes. A highly efficient ‘warm-white’ OLED was fabricated, whose electroluminescence was close to candle emission. The best device demonstrated very high brightness of 40900 cd/m2 (at 15 V), while the external quantum efficiency reached 18.8%. |
| Dissertation Institution |
Kauno technologijos universitetas. |
| Type |
Summaries of doctoral thesis |
| Language |
Lithuanian |
| Publication date |
2019 |
