| 학회 |
한국고분자학회 |
| 학술대회 |
2011년 가을 (10/06 ~ 10/07, 김대중 컨벤션센터) |
| 권호 |
36권 2호 |
| 발표분야 |
유기전자소자용 소재 및 소자(분자전자소재 부문위원회) |
| 제목 |
Sequential Processing: Control of Nanomorphology in PCDTBT/PC70BM Bulk Heterojunction Solar Cells |
| 초록 |
Bulk heterojunction organic photovoltaic devices based on poly[N-9'' -hepta- decanyl-2,7-carbazole-alt-5,5-(4' ,7' -di-2-thienyl-2' ,1' ,3' -benzothiadiazole) (PCDTBT)/[6,6]- phenyl C70 butyric acid methyl ester (PC70BM) can be successfully fabricated by a sequential solution deposition process.When the top layer is deposited from an appropriate cosolvent, the PC70BM penetrates a predeposited bottom layer of PCDTBT during the spin-casting process, resulting in an interdiffused structure with a layer-evolved bulk heterojunction (LE-BHJ) nanomorphology. The PCDTBT:PC70BM LE-BHJ solar cells prepared with an optimized cosolvent ratio have comparable power conversion eciency to the conventional BHJ solar cells. The nanomorphology of the optimized PCDTBT:PC70BM LE-BHJ mixture was found to have better vertical connectivity than the conventional BHJ material. |
| 저자 |
왕동환1, 문지선2, Jason Seifter3, 조장4, 박종혁5, Alan J. Heeger6, 박오옥2
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| 소속 |
1한국과학기술원(KAIST), 2Center for Polymers and Organic Solids, 3Univ. of California at Santa Barbara, 4Santa Barbara, 5California 93106-5090, 6United States |
| 키워드 |
rganic photovoltaic device; bulk heterojuction; bilayer mixture; layer-evolved bulk heterojuction; nanoscale morphology; interdiffused structure; cosolvent effect
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| E-Mail |
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