| 학회 | 한국고분자학회 |
| 학술대회 | 2004년 가을 (10/08 ~ 10/09, 경북대학교) |
| 권호 | 29권 2호, p.707 |
| 발표분야 | 분자전자 부문위원회 |
| 제목 | Balancing Carrier Injection of Poly(9,9-dioctylfluorene) based Light-Emitting Diodes using Nanostructured PEDOT-PSS/Layered Silicate Complex |
| 초록 | Poly(3,4-ethylenedioxylthiophene)-Poly(styrenesulphonic acid) composite (PEDOT-PSS) has been a most widely used material for hole transporting layer(HTL) in polymer light-emitting diodes(PLED). Relatively low conductivity(10-3 ~ 10-5 S/cm) of PEDOT-PSS is prefered for PLEDs to avoid crosstalk in matrix displays and also smaller particle size is recommended for more flat and homogeneous layers to avoid shorts. It is known that with increased ratio of PSS content PEDOT-PSS shows lower conductivity, whereas the particle size distribution and its macroscopic morphology is largely dependent on the polymerization step or surface coating step. In this study, we carefully chose the layered silicate whose particle size is comparable to PEDOT and fabricated PEDOT-PSS/layered silicate by various weight ratio. Solution intercalation was conducted and the exfoliation of the silicate was confirmed by XRD study. The layered silicate, which is well dispersed on the ITO glass, blocks PEDOT-PSS grains efficiently and the surface properties and the conductivities were affected. Finally, the electroluminescence properties of the blue-type Poly(9,9-dioctylfluorene) based LEDs with HTL of PEDOT-PSS/layered silicate were measured. |
| 저자 | 정훈성1, 변호연1, 최용석2, 정인재1 |
| 소속 | 1한국과학기술원 생명화학공학과, 2삼성종합기술원 / 한국과학기술원 생명화학공학과 |
| 키워드 | PLED; light; emitting; PDOF; PEDOT; silicate; nanocomposite |
