TPD-Based Copolymers with Strong Interchain Aggregation and High Hole Mobility for Efficient Bulk Heterojunction Solar Cells
SCIE
SCOPUS
- Title
- TPD-Based Copolymers with Strong Interchain Aggregation and High Hole Mobility for Efficient Bulk Heterojunction Solar Cells
- Authors
- Cheon, YR; Kim, YJ; Ha, JJ; Kim, MJ; Park, CE; Kim, YH
- Date Issued
- 2014-12-23
- Publisher
- AMER CHEMICAL SOC
- Abstract
- ADA conjugated polymer, PTPD-TVT, containing thienopyrroledione and thiophenevinylenethiophene (TVT) units was synthesized as an electron donor for organic photovoltaic devices. It possesses a small bandgap and has excellent coplanarity and high hole mobility. To further enhance the interchain interactions between the polymer chains, a selenophenevinyleneselenophene (SVS) unit was also introduced and copolymerized to form the PTPD-SVS polymer. Devices made from PTPD-TVT and PTPD-SVS have rather promising power conversion efficiencies (PCEs) of 4.87 and 5.74%, respectively. The higher PCE value for solar cells based on PTPD-SVS was attributed to an enhanced carrier mobility resulting from stronger interchain aggregation in the BHJ active layer. These results show that the incorporation of a vinylene unit in TPD-based polymers is an effective way to reduce the bandgap and thereby improve charge transport for efficient photovoltaic devices.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/35751
- DOI
- 10.1021/MA501888Z
- ISSN
- 0024-9297
- Article Type
- Article
- Citation
- MACROMOLECULES, vol. 47, no. 24, page. 8570 - 8577, 2014-12-23
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