| 학회 |
한국고분자학회 |
| 학술대회 |
2015년 가을 (10/06 ~ 10/08, 대구컨벤션센터(EXCO)) |
| 권호 |
40권 2호 |
| 발표분야 |
분자전자 부문위원회 II |
| 제목 |
Side Chain Engineering of Polymer Acceptors: Highly Efficient Approach to Achieve High-Performance All-Polymer Solar Cells |
| 초록 |
All-polymer solar cells (all-PSCs) still face the great challenge of having low power conversion efficiency (PCE) values of only 3-5%. The prominent origins of the poor efficiency of all-PSCs are the undesirable features of the bulk-heterojunction (BHJ) blend morphology. Tuning side alkyl chains of conjugated polymers is an effective route for manipulating the blend morphology in BHJ type solar cells. Herein, we report high-performing all-PSCs with 6.11% efficiency by developing a series of naphthalenediimide (NDI)-based polymer acceptors with different alkyl side chains. We demonstrated that the use of the PNDIT and PNDIT2 with hexyldecyl side chains produced highly-ordered polymer stackings with strong face-on geometry and at the same time, forming the optimal BHJ morphology with finely separated phase domains, all of which contributed together to generate efficient all-PSCs with PCEs over 6%. |
| 저자 |
김범준1, 우한영2, Cheng Wang3, 강현범1, 이원호1, 이창연1
|
| 소속 |
1KAIST, 2고려대, 3Advanced Light Source |
| 키워드 |
all-polymer solar cells; high-efficiency; side chain engineering; polymer acceptors; blend morphology
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| E-Mail |
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