| 학회 |
한국고분자학회 |
| 학술대회 |
2017년 봄 (04/05 ~ 04/07, 대전컨벤션센터) |
| 권호 |
42권 1호 |
| 발표분야 |
분자전자 부문위원회 I |
| 제목 |
Effect of Structure Moification of Side Chain in Semiconducting Polymers on Morphology and Solar Cell Properties |
| 초록 |
We have synthesized a series of benzo[1,2-b:4,5-b0]-dithiophene (BDT)-co-thieno[3,4-b]thiophene (TT) based polymers with various alkyl side chains and bridging-atom on their TT units and studied the effects of the variation in the effective van der Waals volumes (eVol) of the side chains on the photovoltaic properties of the associated bulk heterojunction (BHJ) solar cells. eVol was found to be correlated with the degree of phase separation in the BHJ film, which affects the area of the polymer-PC71BM interface and the charge mobility. The polymer has a 2-ethylhexyl group that results in a better BHJ film morphology, with sufficient polymer-PC71BM interfacial area for efficient charge generation and minimal charge mobility loss. As a result, the solar cell device (2-ethylhexyl polymer) exhibits the highest power conversion efficiency of 8.25% because its short-circuit current density value (16.24 mA/cm2) and fill factor (0.674) are the highest of the synthesized polymers. |
| 저자 |
윤재훈, 박성민, 이효상, 신인정, 다니엘 쿠르니아완, 김성실, 김효정, 손해정
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| 소속 |
한국과학기술(연) |
| 키워드 |
Polymer semiconductor; polymer solar cell
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| E-Mail |
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