| 학회 |
한국고분자학회 |
| 학술대회 |
2019년 봄 (04/10 ~ 04/12, 부산컨벤션센터(BEXCO)) |
| 권호 |
44권 1호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Manipulating the molecular orientation of conjugated polymers for bilayer OPVs |
| 초록 |
The Sq process, which forms nanoscale network structures from quasi-solid-state interdiffusion through swelling and annealing, is one of the most efficient methods for fabricating organic solar cells and blend films. We examined the effect of the crystallinity and orientation of P3HT molecules on the formation of the nanostructure by carrying out an Sq process using various solvents with different boiling points. We showed that the moderate crystallinity promoted suitable interdiffusion between the donor and acceptor, and hence was important for achieving high-performance solar cells using Sq processing. Nanostructure formation by inter-diffusion was investigated and visualized by taking a combination of GIWAXS and ToF-SIMS measurements. In addition, our Sq-processed solar cell yielded a device efficiency as high as 3.25%, and was also impressive because it was made with an eco-friendly solvent and using a short-duration annealing process, in contrast to the conventional BHJ process. |
| 저자 |
이아라1, 채상민1, 홍승연1, 이현휘2, 김효정1
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| 소속 |
1부산대, 2포항가속기(연) |
| 키워드 |
solvent; boiling point; conjugated Polymer; crystallinity; orientation; organic solar cells; sequential process
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| E-Mail |
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