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Two TPD-Based Conjugated Polymers: Synthesis and Photovoltaic Applications as Donor Materials
- Authors
- Lee, Ji Eun; Kim, Yu Jin; Hong, Jisu; Wu, Xinwei; Hwang, Moon Chan; Kwon, Soon-Ki; An, Tae Kyu; Kim, Yun-Hi
- Issue Date
- Dec-2018
- Publisher
- 한국고분자학회
- Keywords
- bulk heterojunction solar cells; polymer solar cells; polymer donors; thienopyrrolodione; blend morphology
- Citation
- Macromolecular Research, v.26, no.13, pp 1193 - 1199
- Pages
- 7
- Indexed
- SCI
SCIE
SCOPUS
KCI
- Journal Title
- Macromolecular Research
- Volume
- 26
- Number
- 13
- Start Page
- 1193
- End Page
- 1199
- ISSN
- 1598-5032
2092-7673
- Abstract
- Two conjugated thienopyrrolodione-thiophene-vinyl-thiophene (TPDTVT)-based polymers, with one of them having an additional cyano (CN) group attached to the TVT building block, are synthesized and incorporated in photovoltaic device as electron-donating materials. Both TPD-TVT and TPD-TVTCN showed good thermal stability and appropriate solubility in chlorinated solvents, but they exhibited quite different optoelectrochemical and photovoltaic properties. The stronger intermolecular interactions of TPD-TVTCN, compared to TPD-TVT, lead to enhanced aggregation in blends with PC71BM. The domain sizes within 15-20 nm and improved molecular packing in TPD-TVTCN:PC71BM blend films result in better photovoltaic performance of TPD-TVTCN:PC71BM device compared to the device employing TPD-TVT.
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