| 학회 |
한국고분자학회 |
| 학술대회 |
2019년 봄 (04/10 ~ 04/12, 부산컨벤션센터(BEXCO)) |
| 권호 |
44권 1호 |
| 발표분야 |
분자전자 부문위원회 I |
| 제목 |
Influence of Phosphine Oxide containing Symmetrical and Asymmetrical Ancillary Ligands on Solution-Process Phosphorescence Organic Light-Emitting Diode Efficiency and Life Time. |
| 초록 |
In order to achieve longer stability with high efficiency of organic light-emitting diodes (OLEDs), we designed and synthesized two new 2-phenylpyridine based Ir(III) dopants and a suitable host for the fabrication of green phosphorescent OLEDs (PHOLEDs). The solution-process green devices using bis[5-ethylhexyl-8-trifluoromethyl-5H-benzo(c)(1,5)naphthyridin-6-one](dipyridi nylphosphinate)iridium(III) (sym-Ir1) as dopant, (4'-(9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)di-o-tolylphosphine oxide (m-CBPPO1) and TPBi as host. The optimized devices show excellent electroluminescence performances with maximum current efficiency (CE) of 68.72 cd/A, a maximum external quantum efficiency (EQEmax) of 20.82% with a notable (0.29, 0.62). The sym-Ir1 showed comparatively better stability compared it counterpart. We believe that the presence of undesirable isomers of the asym-Ir2 is the cause to the effective degradation of the solution processed devices. |
| 저자 |
아티싼 마헤쉬와란1, 쉬리 비자야 고팔란1, 김혜인1, 제갈영순2, 진성호1
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| 소속 |
1부산대, 2경일대 |
| 키워드 |
Symmetrical and Asymmetrical Ancillary Ligand; Solution-Process; Organic Light-Emitting Diode
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| E-Mail |
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