| 학회 |
한국고분자학회 |
| 학술대회 |
2012년 가을 (10/11 ~ 10/12, 창원컨벤션센터) |
| 권호 |
37권 2호 |
| 발표분야 |
분자전자 부문위원회 |
| 제목 |
Controlled nanomorphology of PCDTBT-fullerene blends by using end-group functionalization of the conjugated polymers for high efficiency organic solar cells |
| 초록 |
PCDTBT is one of the most promising p-type semiconducting materials with high power conversion efficiency (PCE) up to 4.6% in organic solar cells. The high efficiency is caused by low HOMO level and high hole mobility of the polymer. However, the PCE of PCDTBT can be further improved by optimization of the morphology of the photoactive layer. Here we controlled the morphology of the photoactive layer of PCDTBT/PCBM film by end-functionalized PCDTBT and demonstrated the high efficiency as high as 6.0% in organic solar cells without any post treatments, additives and optical spacers. End group functionalized PCDTBT has clear fibrillar structures in the blend film with PCBM. These fibrillar structures are originated from the increased pi-pi stacking, which results in remarkable increment in hole mobility and light absorption. The end group modification of semiconducting polymers can be utilized to control the morphology of the photoactive layer for high performance organic solar cells |
| 저자 |
심치영, 김민, 김흥규, 이재원, 신지수, 조길원
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| 소속 |
포항공대 |
| 키워드 |
유기태양전지; 고분자 합성; 유기전자소자; PCDTBT
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| E-Mail |
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