| 학회 | 한국공업화학회 |
| 학술대회 | 2014년 가을 (11/12 ~ 11/14, 엑스코(대구)) |
| 권호 | 18권 2호 |
| 발표분야 | 정보전자소재-포스터 |
| 제목 | New Blue Emitting Materials in White OLED Based on Co-Host System |
| 초록 | Until now, WOLEDs have been produced using a vacuum evaporation method, but this method involves drawbacks such as high cost, difficulty of large scaling, and difficulty of adjusting the doping concentration. Therefore, there is a lot of on-going research methods of producing solution processed WOLEDs such as spin-coating, screen-printing, and ink-jet printing that show advantages in large scaling and are relatively inexpensive production. A two-color WOLED of a co-host system using solution process method was demonstrated. The device configuration was ITO / PEDOT:PSS (40 nm) / emitting layer (50 nm) / TPBi (20 nm) / LiF (1 nm) / Al. The emitting layer consisted of TAT, NPB, DPAVBi (blue dopant), and Rubrene (yellow dopant). NPB was used to help hole carrier transport as well as blue host role. The device using the T-TAT compound as a co-host showed a luminance efficiency of 2.73 cd/A, which is 77% higher than TAT device of 1.54 cd/A at 20 mA/cm2. |
| 저자 | 이재현, 김승호, 박종욱 |
| 소속 | 가톨릭대 |
| 키워드 | WOLED; Solution Process |
