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| Type |
Poster Presentation |
| Area |
Material Chemistry |
| Room No. |
Exhibition Hall 2 |
| Time |
4월 19일 (금요일) 11:00~12:30 |
| Code |
MAT.P-432 |
| Subject |
Aggregation Induced Emission Luminogens for Solution-processed Non-doped White Organic Light-emitting Diodes |
| Authors |
Jiwon Yoon, CheolHun Jeong, Hyung Jong Kim, Youngun Kim, Chae Yeong Kim, Jihyun Kim, Su Hong Park, Min Ju Cho, Dong Hoon Choi*
Department of Chemistry, Korea University, Korea
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| Abstract |
Recently, organic light emitting diodes (OLEDs) based on Aggregation Induced Emission (AIE) for the realization of non-doped OLEDs has been actively studied. Moreover, the device fabrication method of solution process was considered as a strategy for controlling the doping concentration with the desired composition which are advantageous for its simple, low cost, and large area display panel manufacturing.
In this study, two dendritic luminogens of 3ICz-Tr and Tri-tNID were synthesized as blue and orange-red emitter, respectively, and also used for the application of white OLEDs (WOLEDs). Interestingly, the two luminogens showed unique AIE, which was measured by photoluminescence (PL) spectroscopy. As a non-doped emitting layer in the OLED devices, 3ICz-Tr and Tri-tNID showed maximum external quantum efficiency (EQEmax) of 7.29% and 3.71%, respectively. In addition, the WOLED device using 3ICz-Tr and Tri-tNID (99.5:0.5 wt. ratio) under host-free conditions demonstrated nearly pure white emission with the EQEmax of 8.32% and CIE coordinate of (0.32, 0.30). |
| E-mail |
materiality@korea.ac.kr |
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123rd General Meeting of the KCS