| Title |
Organic semiconductors for optoelectronic devices and sensors / |
| Authors |
Gražulevičius, J.V |
| DOI |
10.15388/CCT.2023 |
| ISBN |
9786090708330 |
| Full Text |
|
| Is Part of |
Chemistry and chemical technology: international conference CCT-2023, March 10, 2023, Vilnius: conference book.. Vilnius : Vilnius university press, 2023. p. 21.. ISBN 9786090708330 |
| Abstract [eng] |
Growing interest has been in recent decades focused on organic glass-forming semiconductors. They are used as emitters and hosts in organic light emitting diodes, as charge transporting materials (HTMs) in rapidly developing organic and hybrid sol cells. Organic emitters exhibiting long-living emission such as thermally activated delayed fluorescence or room-temperature phosphorescence are recently widely studied as active materials of the different sensors. The examples of organic semiconductors recently synthesized, studied in the laboratories of the author are reviewed. Asymmetric multiple donor-acceptor type derivatives of tert-butyl carbazole and trifluoromethyl benzene were designed and synthesized exploiting different electron-accepting anchoring groups [1]. Sky blue emitting OLED with the emitting layer of one compound dispersed in host 1,3-bis(N-carbazolyl)benzene displayed emission peak at 477 nm, brightness over 39 000 cd/m2, and external quantum efficiency (EQE) up to 15.9%. Compounds containing triphenylamine or 9-phenylcarbazole as donor moieties and pyrimidine-5-carbonitrile as electron-withdrawing unit were synthesized and studied [2]. Pure blue and greenish-blue fluorescent OLEDs with EQE reaching 7% and 6%, correspondingly, were obtained using the newly synthesized compounds as emitters. EQE of more than 20% and the operation time exceeding 20000 h were recorded for electroluminescent devices with pyrimidine-5-carbonitriles as the hosts. [...]. |
| Published |
Vilnius : Vilnius university press, 2023 |
| Type |
Conference paper |
| Language |
English |
| Publication date |
2023 |
| CC license |
|
