| 학회 |
한국공업화학회 |
| 학술대회 |
2013년 가을 (10/30 ~ 11/01, 대전컨벤션센터) |
| 권호 |
17권 2호 |
| 발표분야 |
포스터-정보.전자소재 |
| 제목 |
High Efficiency New Ambipolar Blue Emitting Materials Using Amino Coumarin Derivatives |
| 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 propertiesy. 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
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| 소속 |
1가톨릭대, 2아주대 |
| 키워드 |
OLED; Blue Emitter; Ambipolar
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| E-Mail |
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