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- 实验方案
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Flexible Organic Solar Cells Over 15% Efficiency with Polyimide-Integrated Graphene Electrodes
摘要： A highly flexible and durable transparent graphene electrode with thermal stability was developed via the direct integration of polyimide (PI) on graphene. Due to the high transparency of PI-integrated graphene electrode and intimate contact between graphene and PI substrate, high-efficiency flexible organic solar cell with a PCE of 15.2% and outstanding mechanical robustness was obtained.
关键词： Thermal Stability,High Efficiency,Polyimide-Integrated Graphene Electrodes,Flexible Organic Solar Cells,Mechanical Robustness
更新于2025-09-23 15:21:01
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Over 14% Efficiency Folding-Flexible ITO-free Organic Solar Cells Enabled by Eco-friendly Acid-Processed Electrodes
摘要： Environment-friendly manufacturing and mechanical robustness are imperative for commercialization of flexible OSCs as green-energy source, especially in portable and wearable self-powered flexible electronics. Although, the commonly adopted PEDOT:PSS electrodes that are treated with severely corrosive and harmful acid lack foldability. Herein, efficient folding-flexible OSCs with highly conductive and foldable PEDOT:PSS electrodes processed with eco-friendly cost-effective acid and polyhydroxy compound are demonstrated. The acid treatment endows PEDOT:PSS electrodes with high conductivity. Meanwhile, polyhydroxy compound doping contributes to excellent bending flexibility and foldability due to the better film adhesion between PEDOT:PSS and PET substrate. Accordingly, folding-flexible OSCs with high efficiency of 14.17% were achieved. After 1,000 bending or folding cycles, the device retained over 90% or 80% of its initial efficiency, respectively. These results represent one of the best performances for ITO-free flexible OSC reported so far and demonstrate a novel approach toward commercialized efficient and foldable green-processed OSCs.
关键词： high efficiency,flexible organic solar cells,foldability,PEDOT:PSS,eco-friendly acid
更新于2025-09-23 15:19:57
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Efficiency above 12% for 1 cm <sup>2</sup> Flexible Organic Solar Cells with Ag/Cu Grid Transparent Conducting Electrode
摘要： With the rapid progress of organic solar cells (OSCs), improvement in the efficiency of large-area flexible OSCs (>1 cm2) is crucial for real applications. However, the development of the large-area flexible OSCs severely lags behind the growth of the small-area OSCs, with the electrical loss due to the large sheet resistance of the electrode being a main reason. Herein, a high conductive and high transparent Ag/Cu composite grid with sheet resistance <1 Ω sq?1 and an average visible light transparency of 84% is produced as the transparent conducting electrode of flexible OSCs. Based on this Ag/Cu composite grid electrode, a high efficiency of 12.26% for 1 cm2 flexible OSCs is achieved. The performances of large-area flexible OSCs also reach 7.79% (4 cm2) and 7.35% (9 cm2), respectively, which are much higher than those of the control devices with conventional flexible indium tin oxide electrodes. Surface planarization using highly conductive PEDOT:PSS and modification of the ZnO buffer layer by zirconium acetylacetonate (ZrAcac) are two necessary steps to achieve high performance. The flexible OSCs employing Ag/Cu grid have excellent mechanical bending resistance, maintaining high performance after bending at a radius of 2 mm.
关键词： flexible organic solar cells,1 cm2,large-area,Ag/Cu grid
更新于2025-09-19 17:13:59
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13.5% flexible organic solar cells achieved by robust composite ITO/PEDOT:PSS electrodes
摘要： Flexible ITO electrodes, as one of the earliest commercialized electrodes with high conductivity and transmittance, have shown great applicability for flexible organic solar cells (FOSCs). Here we fabricated FOSCs based on four types of PET/ITO substrates. The influence of the trace content of Zonyl in PH1000 on photovoltaic performances was carefully investigated. The PH1000 containing 6% EG and 1% Zonyl PH1000 was most favorable for transmittance, conductivity and surface morphology. Under the optimum condition, FOSCs based on PBDB-T-2F:IT-4F obtained a power conversion efficiency (PCE) of 11.3% with a short-circuit current density (Jsc) of 19.12 mA/cm2. Meanwhile FOSCs based on PBDB-T-2F:Y6 achieved a PCE of 13.5% with Jsc of 22.46 mA/cm2, which was the highest PCE with ITO electrodes up to date. Moreover, the optimal FOSCs remained 75.2% of original PCE after 1000 bending cycles, indicating that the use of composite electrodes attributed to overcoming the brittleness of ITO. This work opens a new avenue to prepare all solution-processed FOSCs based on ITO composite electrodes with great efficiency and robustness.
关键词： Composite electrodes,Flexible organic solar cells,Zonyl,Efficiency
更新于2025-09-16 10:30:52