Sequential processing: control of nanomorphology in bulk heterojunction solar cells
Wang, DH; Moon, JS; Seifter, J; Jo, J; Park, JH; Park, OO; Heeger, AJ
HERO ID
1455156
Reference Type
Journal Article
Year
2011
Language
English
PMID
| HERO ID | 1455156 |
|---|---|
| In Press | No |
| Year | 2011 |
| Title | Sequential processing: control of nanomorphology in bulk heterojunction solar cells |
| Authors | Wang, DH; Moon, JS; Seifter, J; Jo, J; Park, JH; Park, OO; Heeger, AJ |
| Journal | Nano Letters |
| Volume | 11 |
| Issue | 8 |
| Page Numbers | 3163-3168 |
| Abstract | 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 C(70) butyric acid methyl ester (PC(70)BM) can be successfully fabricated by a sequential solution deposition process. When the top layer is deposited from an appropriate cosolvent, the PC(70)BM 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:PC(70)BM LE-BHJ solar cells prepared with an optimized cosolvent ratio have comparable power conversion efficiency to the conventional BHJ solar cells. The nanomorphology of the optimized PCDTBT:PC(70)BM LE-BHJ mixture was found to have better vertical connectivity than the conventional BHJ material. |
| Doi | 10.1021/nl202320r |
| Pmid | 21751795 |
| Wosid | WOS:000293665600019 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Source: Web of Science WOS:000293665600019 |
| Is Public | Yes |
| Language Text | English |
| Keyword | Organic photovoltaic device; bulk heterojuction; bilayer mixture; layer-evolved bulk heterojunction; nanoscale morphology; interdiffused structure; cosolvent effect |