Rational design of π-bridges for ambipolar DPP-RH-based small molecules in organic photovoltaic cells
| Autor: | Won Suk Shin, Chang Eun Song, Sang Kyu Lee, Yoonho Eom, Eunhee Lim |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Ambipolar diffusion General Chemical Engineering Photovoltaic system Rational design 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Combinatorial chemistry Small molecule Acceptor 0104 chemical sciences chemistry.chemical_compound Rhodanine chemistry Furan Thiophene 0210 nano-technology |
| Zdroj: | Journal of Industrial and Engineering Chemistry. 45:338-348 |
| ISSN: | 1226-086X |
| DOI: | 10.1016/j.jiec.2016.10.001 |
| Popis: | We report the synthesis of a series of A1–π–A2–π–A1-type small molecules, DPP2T-RH, DPPFT-RH, and DPPT-RH, in which thiophene and furan were introduced to bridge the two strong electron-withdrawing units of DPP and rhodanine (RH). Interestingly, these DPP-RH-based small molecules exhibited ambipolar characteristics, showing photovoltaic performance both as donors and acceptors in combination with PC71BM and P3HT, respectively. The best power conversion efficiencies were obtained from DPPFT-RH (1.77%) and DPP2T-RH (1.28%) as donor and acceptor, respectively. Their physical properties, film packing ability, and photovoltaic performances were fine-tuned by rational design of the π-bridges. |
| Databáze: | OpenAIRE |
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