| 학회 | 한국고분자학회 |
| 학술대회 | 2004년 가을 (10/08 ~ 10/09, 경북대학교) |
| 권호 | 29권 2호, p.431 |
| 발표분야 | 분자전자 부문위원회 |
| 제목 | Electro phosphorescent device with micro phase separation |
| 초록 | Abstract - By utilizing triplet-based emitting centers in polymer and organic light-emitting diodes (PLEDs and OLEDs), and thereby capture both singlet and triplet excited states, the internal quantum efficiency can, in principle, be increased to 100%1 For the iridium heavy-metal complexes, the emission originates from the triplet excited state to the ground state. By using various ligands, this triplet phosphorescence can be turned to wavelengths across the visible spectrum. Generally, phosphorescent PLEDs are potentially important because they can be fabricated at room temperature by solution processing e.g, by spin coating, screen printing or ink-jet printing. Several groups have reported on phosphorescent PLEDs using poly(9-vinyl carbazole) (PVK) as the host polymer2 and iridium complexes as the guest materials in the blending system. In this report, we prepared the blending system which includes three different materials of the Ir(ppy)3, PVK and BuleJ polymer3. In this system, PVK and BuleJ polymer were used as the host polymers and Ir(ppy)3 was used as the guest(energy accepting) material. BuleJ polymer plays a role of efficient energy donating material and it transfers the energy from the PVK to the Ir(ppy)3. So we observed efficient energy transfer from fluorescence to phosphorescence through micro phase-saperated morphology. 참고문헌 1. By Xing Gong, Jacek C. Ostrowski, Daniel Moses, Guilermo C. Bazan, and Alan J. Hegger, Adv. Funct, Mater, 2003, 13, No. 6, June 2. By Xing Gong, Jacek C. Ostrowski, Daniel Moses, Guilermo C. Bazan, and Alan J. Hegger, Michelle S. Liu, and Alex K-Y. Jen, Adv. Mater, 2003, 15, No, 15. 1, January 3 3. Byung Doo Chin,a) Min Chul Suh, Seong Taek Lee, and Ho Kyoon Chung, APP. Phy. Let, VOl 84, No 10, 8 MAR 2004 |
| 저자 | 유동희1, 박종혁2, 김태호2, 박오옥2 |
| 소속 | 1한국과학기술원, 2한국과학기술원 생명화학공학과 |
| 키워드 | Electro phosphorescence; Energy transfer; Polymer blend; micro phase separtion |
