| 학회 |
한국고분자학회 |
| 학술대회 |
2013년 가을 (10/11 ~ 10/12, 창원컨벤션센터) |
| 권호 |
38권 2호 |
| 발표분야 |
기능성 고분자 (포스터발표만 진행) |
| 제목 |
High Crystalline Medium-Band-Gap Polymers Consisting of Benzodithiophene and Benzotriazole Derivatives for Organic Photovoltaic Cells |
| 초록 |
Two donor–acceptor-type medium-band-gap polymers were synthesized via Stille polymerization. The structures combined unsubstituted or triisopropylsilylethynyl (TIPS)-substituted BDT as a donor unit, and benzotriazole with a symmetrically branched alkyl side chain (DTBTz) as an acceptor unit. We investigated the effects of the different BDT moieties on the optical, electrochemical, and photovoltaic properties of the polymers, and the film crystallinities and carrier mobilities. Bulk heterojunction photovoltaic devices were fabricated, and power conversion efficiencies of 5.5% and 2.9% were found for the PTIPSBDT-DTBTz and PBDT-DTBTz-based devices, respectively. This difference was explained by the more optimal morphology and higher carrier mobility in the PTIPSBDT-DTBTz-based devices. This work demonstrates that, under the appropriate processing conditions, TIPS groups can change the molecular ordering and lower the HOMO level, providing the potential for improved OPVs performance. |
| 저자 |
김지훈1, 송창은2, 신원석3, 강현범2, 김범준2, 김봉수4, 강인남5, 황도훈1
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| 소속 |
1부산대, 2한국과학기술원, 3한국화학(연), 4KIST, 5카톨릭대 |
| 키워드 |
Organic photovoltaic device; medium-band-gap polymer; triisopropylsilylethynyl–substituted benzodithiophene; 2D-GIXS; resonant raman spectroscopy
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| E-Mail |
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