Impact of Chalcogenophenes on Donor-Acceptor Copolymers for Bulk Heterojunction Solar Cells
- Authors
- Cho, Nam Gi; Shome, Sanchari; Yu, Eun Sang; Shin, Hee Jeong; Lee, Bo Ram; Kim, In Tae; Choi, Hyosung
- Issue Date
- Nov-2020
- Publisher
- POLYMER SOC KOREA
- Keywords
- conjugated copolymers; medium-bandgap; selenathiazole; copolymerization; inverted device
- Citation
- MACROMOLECULAR RESEARCH, v.28, no.12, pp.1111 - 1115
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- MACROMOLECULAR RESEARCH
- Volume
- 28
- Number
- 12
- Start Page
- 1111
- End Page
- 1115
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/144395
- DOI
- 10.1007/s13233-020-8145-6
- ISSN
- 1598-5032
- Abstract
- Three new selenophene-based conjugated copolymers having different ratios of the monomeric units were designed, synthesized and thoroughly characterized. The introduction of an electron-poor and surfaced building moiety like selenathiazole was highly efficient in tuning the bandgap and polymer properties. The chalcogenophene-based medium-bandgap polymers demonstrated low-lying HOMO energy levels (similar to 5.87 eV), which is benign for use in multi-junction polymer solar cell applications. The representative polymers with heavy atoms revealed the change in electronegativity and atomic size that highly affected the molecular property, its topological features, and photovoltaic properties in polymer solar cells. The selenium-substituted (0.5:0.5) polymer donors showed power conversion efficiencies above 3% when combined with [6,6]-phenyl-C71-butyric acid methyl ester (PC70BM) acceptors in a quintessential bulk-heterojunction solar cell.
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