| 학회 | 한국공업화학회 |
| 학술대회 | 2021년 봄 (05/12 ~ 05/14, 부산 벡스코(BEXCO)) |
| 권호 | 25권 1호 |
| 발표분야 | 포스터-디스플레이 |
| 제목 | Synthesis and characterization of bipolar host using dibenzofuran moiety with high triplet energies for blue TADF device. |
| 초록 | It is important to balance charge carrier transporting in organic light emitting diodes to recombination efficiency and to have higher performances. Therefore, the bipolar host materials of the emitting layer should transport both holes and electrons for the charge balance. Bipolar hosts were synthesized via substituting a 9H-phenyl carbazole with dibenzofuran in 3,3''-di(9H-carbazol-9-yl)-1,1':2',1''-terphenyl [DCz-oTP], which is originally unipolar host material. The synthesized bipolar hosts are 9-(2'-(dibenzo[b,d]furan-1-yl)-[1,1'-biphenyl]-3-yl)-9H-carbazole [1-DBFCz-oTP], 9-(2'-(dibenzo[b,d]furan-2-yl)-[1,1'-biphenyl]-3-yl)-9H-carbazole [2-DBFCz-oTP] and 9-(2'-(dibenzo[b,d]furan-4-yl)-[1,1'-biphenyl]-3-yl)-9H-carbazole [4-DBFCz-oTP]. OLED device was fabricated by applying the synthesized material, and 1-DBFCz-oTP, a bipolar host with dibenzofuran at position 1, improved maximum efficiency, current efficiency, and power efficiency compared to DCz-oTP. |
| 저자 | 김은비, 이칠원, 장혁우, 하태훈 |
| 소속 | 단국대 |
| 키워드 | OLED; TADF; HOST; BLUE; Dibenzofuran |
