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- Yang, Changduk
- Advanced Tech-Optoelectronic Materials Synthesis Lab.
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A simultaneous achievement of high performance and extended thermal stability of bulk-heterojunction polymer solar cells using a polythiophene-fullerene block copolymer
- Author(s)
- Yun, Myoung Hee, Kim, Jonggi, Yang, Changduk, Kim, Jin Young
- Issued Date
- 2012-09
- Citation
- SOLAR ENERGY MATERIALS AND SOLAR CELLS, v.104, pp.7 - 12
- Abstract
- We report substantial improvements in efficiency and thermal stability of the poly(3-hexylthiophene):[6.6]-phenyl-C-61-butyric acid methyl ester (PCBM) (P3HT:PCBM) bulk heterojunction (BHJ) system by adding a diblock copolymer P3HT-b-P(St(89)BAz(11))-C-60 (P3HT=poly (3-hexylthiophene), St=styrene, BAz=benzyl aside) as a compatibilizer. Small amounts of the diblock copolymer alter the interfacial morphology between the P3HT and PCBM components, resulting in a noticeable difference in phase segregation of the BHJ films, as evident in atomic force microscopy images. The best performance is observed in the P3HT:PCBM cell with 10% P3HT-b-P(St(89)BAz(11))-C-60, which exhibits substantially improved power conversion efficiency and thermal stability compared to the P3HT:PCBM control device.
- Publisher
- ELSEVIER SCIENCE BV
- ISSN
- 0927-0248
- Keyword (Author)
- Polymer solar cells, Bulk-heterojunction, Diblock copolymer, Compatibilizer, Stability
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