| 학회 |
한국고분자학회 |
| 학술대회 |
2014년 봄 (04/10 ~ 04/11, 대전 컨벤션센터) |
| 권호 |
39권 1호 |
| 발표분야 |
분자전자 부문위원회 |
| 제목 |
New Ambipolar Blue Emitting Materials Based on Amino Coumarin Derivatives with High Efficiency for OLEDs |
| 초록 |
New blue emitting materials, 7-diphenylamino-4-methyl-coumarin (DPA-MC) and amino-tri (4-methylcoumarin) (T-MC) including coumarin moiety were synthesized by Ullman reaction. UV–Vis. spectra of DPA-MC and T-MC in a film state showed maximum absorption wavelengths of 382 nm and 399 nm, respectively. PL spectra of DPA-MC and T-MC show maximum emission wavelengths of 463 nm and 481 nm respectively. Non-doped OLED devices were fabricated by using the synthesized materials as an emitting material layer. DPA-MC compound showed highly efficient luminescence properties. EL spectrum of DPA-MC exhibited a maximum value of 463 nm and DPA-MC device provided luminescence efficiency of 3.83 cd/A, power efficiency of 2.46 lm/W and CIE coordinates of (0.154, 0.190) at a current density of 10 mA/cm2. In particular, Power efficiency increased by more than 1.6 times in DPA-MC (2.46 lm/W), which is higher than commercialized material, DPVBi (1.46 lm/W). |
| 저자 |
김승호1, 이경진2, 김범진1, 이재현1, 계광열2, 박종욱1
|
| 소속 |
1가톨릭대, 2아주대 |
| 키워드 |
OLED; Blue emitter.
|
| E-Mail |
|
