| 학회 |
한국고분자학회 |
| 학술대회 |
2016년 봄 (04/06 ~ 04/08, 대전컨벤션센터) |
| 권호 |
41권 1호 |
| 발표분야 |
분자전자 부문위원회 I |
| 제목 |
Ternary Blend All-Polymer Solar Cells: The Role of Miscible Polymer in the Crystallinity and Morphology Control |
| 초록 |
In this paper, we fabricated ternary blend all-polymer solar cells (all-PSCs) that enhance 21.8% of power conversion efficiency (PCE) compared to binary blend all-polymer solar cells. The all-PSCs have some weak points caused by the strong tendency of enthalpy-driven phase separation between polymers and a narrow absorption region of solar spectra. To overcome these problems, we used poly(4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b:4,5b’]dithiophene) (PBDTT) as the additional donor, miscible with other polymers configuring binary all-PSCs. The three polymers used in ternary blend solar cells have a similar surface energy for the minimization of phase separation. As the addition of the PBDTT, our ternary blend solar cell showed enhanced performance. The maximum PCE was obtained from 40wt% addition of PBDTT, by the control of the weight ratios of PBDTT in the donor portion. |
| 저자 |
한기복, 이원호, 김태수, 이창연, 강태의, 김범준
|
| 소속 |
KAIST |
| 키워드 |
Ternary Blend; All-Polymer Solar Cell
|
| E-Mail |
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