Blue PhOLEDs Using the Mixed Host of UGH2 and Carbazole Derivative Doped with FCNIr(pic)
| Autor: | Ji Geun Jang, Hyun Jung Kim |
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| Rok vydání: | 2012 |
| Předmět: | |
| Zdroj: | Molecular Crystals and Liquid Crystals. 563:215-222 |
| ISSN: | 1563-5287 1542-1406 |
| DOI: | 10.1080/15421406.2012.689720 |
| Popis: | New high efficiency blue light-emitting phosphorescent devices using the mixed host of p-bis(triphenylsilyl)-benzene [UGH2] and carbazole derivative like 4,4′,4″-tris(N-carbazolyl)-triphenylamine [TCTA] or N,N′-dicarbazolyl-3,5-benzene [mCP] and the dopant of 10% bis((3,5-difluoro-4-cyanophenyl)pyridine)iridium-picolinate [FCNIr(pic)] were fabricated and evaluated according to the different treatments of carbazolyl materials and the mixture ratios of TCTA/UGH2. The best result was obtained in the mixed host of UGH2 and 10% TCTA. In the devices with the mixed host of UGH2 and 10% TCTA, the addition of two exciton blocking layers of mCP and tris-[3-(3-pyridyl)mesityl]borane [3TPYMB] resulted in the improvement of current efficiency and color quality. The device with organic structure of N,N′-diphenyl-N,N′-bis-[4-(phenyl-m-toly- lamino)-phenyl]-biphenyl-4,4′-diamine [DNTPD]/N,N′-di(1-naphthyl)-N,N’-diphenyl-benzidine [NPB]/mCP/(UGH2, 10% TCTA) doped with 10% FCNIr(pic)/3TPYMB/4,7-diphenyl-1,10-phenanthroline... |
| Databáze: | OpenAIRE |
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