Effect of Branched Alkyl Side Chains on the Performance of Thin-Film Transistors and Photovoltaic Cells Fabricated with Isoindigo-Based Conjugated Polymers
- Authors
- Park, Gi Eun; Shin, Jicheol; Lee, Dae Hee; Cho, Min Ju; Choi, Dong Hoon
- Issue Date
- 15-5월-2015
- Publisher
- WILEY-BLACKWELL
- Keywords
- conjugated polymers; heteroatom-containing polymers; high performance polymers; isoindigo; photovoltaic cell
- Citation
- JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, v.53, no.10, pp.1226 - 1234
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
- Volume
- 53
- Number
- 10
- Start Page
- 1226
- End Page
- 1234
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/93549
- DOI
- 10.1002/pola.27555
- ISSN
- 0887-624X
- Abstract
- New isoindigo and di(thienyl)ethylene-containing -extended conjugated polymers with different branched side chains were synthesized to investigate their physical properties and device performance in thin-film transistors and photovoltaic cells. 11-Butyltricosane (S3) and 11-heptyltricosane (S6) groups were used as side-chain moieties tethered to isoindigo units. The linking groups between the polymer backbone and bifurcation point in the branched side chain differ in the two polymers (i.e., PIDTE-S3 and PIDTE-S6). The polymers bearing S6 side chains showed much better charge transport behavior than those with S3 side chains. Thermally annealed PIDTE-S6 film exhibited an outstanding hole mobility of 4.07 cm(2) V-1 s(-1) under ambient conditions. Furthermore, bulk heterojunction organic photovoltaic cells made from a blend film of PIDTE-S3 and (6,6)-phenyl C61-butyric acid methyl ester demonstrated promising device performance with a power conversion efficiency in the range of 4.9-5.0%. (c) 2015 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 2015, 53, 1226-1234
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