Two-in-one alcohol-processed PEDOT electrodes produced by solvent exchange for organic solar cells
Energy and Environmental Science, ISSN: 1754-5706, Vol: 16, Issue: 4, Page: 1511-1519
2023
- 24Citations
- 13Captures
- 1Mentions
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Most Recent News
Investigators from Huazhong University of Science and Technology Report New Data on Organic Solar Cells (Two-in-one Alcohol-processed Pedot Electrodes Produced By Solvent Exchange for Organic Solar Cells)
2023 APR 18 (NewsRx) -- By a News Reporter-Staff News Editor at Chemicals & Chemistry Daily Daily -- Investigators publish new report on Solar Cells
Article Description
Poly(3,4-ethylenedioxythiophere):poly(styrenesulfonate) (PEDOT:PSS) is a common solution-processed electrode for printable organic solar cells. However, the water-dispersed PEDOT:PSS displays de-wetting issues when deposited on an active layer, which limits its application on printable top electrodes. In this work, we report a solvent exchange method to prepare alcohol-processed PEDOT:PSS. Spontaneous exchange of water and alcohol occurs when aqueous PEDOT:PSS in a dialysis membrane is immersed into alcohol. This is probably due to the polarity difference that induces different speeds to pass through the dialysis membrane. The residual PEDOT:PSS was further dispersed in ethanol and ethanol-based PEDOT:PSS (e-PEDOT:PSS) was obtained. The obtained e-PEDOT:PSS has good wetting ability and high electronic conductivity. The work function of e-PEDOT:PSS was tuned from 4.9 to 5.3 eV by adding an alcohol-based fluorinated formulation (PEDOT:F). The obtained formulation e-PEDOT:PSS was blade coated as the top electrode without additional hole-transporting layers (called 2-in-1 electrodes), and the fabricated devices based on e-PEDOT:PSS showed an efficiency of 14.02%.
Bibliographic Details
Royal Society of Chemistry (RSC)
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