| 학회 |
한국고분자학회 |
| 학술대회 |
2018년 가을 (10/10 ~ 10/12, 경주컨벤션센터) |
| 권호 |
43권 2호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Using Phase Separated Color-Less Polyimide Films for external light extraction organic light-emitting diodes |
| 초록 |
This research reports a simple and low-cost method for applying the binary polymer blend of phase separated films on OLEDs to enhance quantum efficiency. The binary polymer were prepared with color-less polyimide (PI) and polyamic acid (PAA) precursor. The precursor PAA has quite different surface energy from PI by carboxylic acid and amide groups in the backbone chain. These surface energy differences could promote phase separation while the binary blend solution became unstable stage. Furthermore, after thermal imidization of PAA, the phase separated structure was maintained owing to the high glass transition temperature of PI. The various phase separated PI films was attached to glass substrate of OLEDs to evaluate their performance. This efficiency enhancement method is suitable for replacing existing microlens arrays and easily applied to flexible display devices |
| 저자 |
정민교, T.K Trang Tu, 박한은, 임권택
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| 소속 |
부경대 |
| 키워드 |
polyimide; OLED; quantum efficiency; phase separation; polymer blend
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| E-Mail |
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