| 학회 |
한국고분자학회 |
| 학술대회 |
2012년 가을 (10/11 ~ 10/12, 창원컨벤션센터) |
| 권호 |
37권 2호 |
| 발표분야 |
분자전자 부문위원회 |
| 제목 |
Highly Efficient Bulk-Heterojunction Solar Cells via Synergic Enhancement of Processing Additives and Optical Spacers |
| 초록 |
We report the fabrication and measurement of bulk-heterojunction (BHJ) solar cells using a narrow-bandgap conjugated polymer, poly[(4,4-didodecyldithieno[3,2-b:2’,3’-d]silole)-2,6-diyl-alt-(2,1,3-benzothiadiazole)-4,7-diyl] (P1) in composites with the fullerene derivative [6,6] phenyl-C71-butylric acid methyl ester (PC71BM). In particular, we focus on the synergic enhancement in the device performance by introducing a processing additive and titanium sub-oxide (TiOx) interlayer simultaneously. When we introduced 4% of 1-chloronaphtalene (1-CN) as a processing additive to the P1/PC71BM BHJ composite, the morphology of the BHJ layers was improved dramatically, thereby resulting in 70% increase in the short-circuit current (Jsc) with 4.5% power conversion efficiency (PCE). The TiOx optical spacer further increased Jsc with PCE ~5%. In addition, the device with the TiOx interlayer exhibited stable performance, and ~ 90 % of the initial efficiency was maintained after 192 hours. |
| 저자 |
권순철1, 박진균2, 김근진3, 공재민4, Guillermo C. Bazan5, 이광희6
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| 소속 |
1광주과학기술원, 2Departments of Chemistry & Biochemistry and Materials, 3Univ. of California, 4Santa Barbara (UCSB), 5School of Material Science and Engineering, 6Gwangju Institute of Science and Technology (GIST) |
| 키워드 |
narrow-bandgap polymers; conjugated polymers; polymer solar cells; bulk-heterojunction; optical spacer
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| E-Mail |
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