표제지
목차
ABSTRACT 11
제1장 서론 13
제1절 연구 배경 13
제2절 연구 목적 15
제2장 실험 16
제1절 합성 및 중합 16
1. 재료 16
2. Compound 3 합성 16
3. 용액 중합 (solution polymerization - Stille coupling) 16
제2절 복합체(PIDF-BT@SWCNT) 제조 21
1. PIDF-BT@SWCNT 제조 21
2. 열 중량 분석 (thermogravimetric analysis, TGA) 21
3. PIDF-BT/SWCNT 제조 22
4. 박막 제조 및 도핑 22
제3절 소자 제조 및 특성 분석 22
1. J-E transfer curve 및 4 probe 전기 전도도 측정 22
2. Morphology 분석 23
3. 분광 분석 (UV-Vis, XPS, Raman, ESR, XRD) 23
제3절 열전 성능 분석 24
제3장 본론 25
제1절 PIDF-BT@SWCNT 제조 및 복합체 형성 규명 25
제2절 전기적 특성 31
제3절 복합체 및 전하 생성 메커니즘 39
제5절 PIDF-BT@SWCNT의 열전 특성 49
제4장 결론 51
참고문헌 52
국문초록 60
Figure 1. ¹H-NMR spectra of Compound 3. 20
Figure 2. chemical structure of poly[2-([2,2'-bithiophen]-5-yl)-3,8-difluoro-5,10-bis(5-octylpentadecyl)-5,10-dihydroindolo[3,2- 27
Figure 3. (a) UV-Vis spectra of PIDF-BT in o-DCB solution (blue) and thin film (red). UV-Vis spectra of PIDF-BT@SWCNT in o-DCB... 28
Figure 4. (a) Representative transmission electron microscopy (TEM) image of PIDF-BT@SWCNT. (b) TEM image of PIDF-BT@SWCNT... 29
Figure 5. Thermogravimetric analysis (TGA) spectra of (a) PIDF-BT, (b) neat SWCNT, (c) PIDF-BT@SWCNT under nitrogen environment. 30
Figure 6. UV-vis absorption spectra of PIDF-BT@SWNCT film before and after molecular doping. 34
Figure 7. (a) J-E characteristics and (b) electrical conductivities obtained with a four-pointed electrode of PIDF-BT@SWCNT film... 35
Figure 8. AFM topologies and SEM images of PIDF-BT@SWCNT (a) pristine, (b) F4TCNQ-doped, and (c) AuCl₃-doped films. 36
Figure 9. AFM topologies and SEM images of PIDF-BT/SWCNT composite, (a) pristine, (b) F4TCNQ-doped, and (c) AuCl₃-doped films. 37
Figure 10. Time-dependent electrical conductivities of pristine, F4TCNQ-doped, and AuCl₃-doped PIDF-BT@SWCNTs under N2 and... 38
Figure 11. X-ray photoelectron spectroscopy (XPS) analysis of (a) PIDF-BT, (b)PIDF-BT@SWCNT, (c) F4TCNT-doped PIDF-... 44
Figure 12. electron spin magnetic resonance (ESR) spectra of SWCNT, pristine, F4TCNQ-doped, and AuCl₃-doped PIDF-BT@SWCNTs. 45
Figure 13. Raman spectra of (a) PIDF-BT and (b,c) PIDF-BT@SWCNT before and after doping, respectively. (d) Relative Raman shift for G+... 46
Figure 14. (a, b) Raman spectra of SDBS@SWCNT before and after doping, and (c) J-E characteristic curves of the corresponding... 47
Figure 15. X-ray diffraction (XRD) patterns of (a) PIDF-BT and difference in d-spacing before and after doping. XRD patterns of (b)... 48
Figure 16. (a) Setup of thermovoltage measurement, (b) thermovoltage trend with temperature gradient in PIDF-BT@SWCNT before and after... 50
Scheme 1. Synthetic routes to the designed conjugated polymer, Compound 3. (i) NaH, anhydrous tetrahydrofuran (THF), reflux, 24 hours. 18
Scheme 2. Synthetic routes to the designed conjugated polymer, PIDF-BT. (ii) Pd₂(dba)₃, P(o-tolyl)₃, anhydrous toluene, 100℃, reflux, 24hours. 19