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首页> 外文期刊>International journal of applied mechanics >Exploring the Chemical Interaction between Diiodooctane and PEDOT-PSS Electrode for Metal Electrode-Free Nonfullerene Organic Solar Cells
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Exploring the Chemical Interaction between Diiodooctane and PEDOT-PSS Electrode for Metal Electrode-Free Nonfullerene Organic Solar Cells

机译:用于金属电极无氟苯有机太阳能电池二碘辛烷和PEDOT-PSS电极之间的化学相互作用

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摘要

Metal electrode-free organic solar cells with a printable top electrode are attractive in realizing the low cost of photovoltaics. Interaction between the printable electrode and the active layer is critical to the device performance. In this work, we report the chemical interaction between the printable polymer electrode poly(3,4-ethylenedioxythiophene):poly-(styrenesulfonate) (PEDOT:PSS) and the typically used additive of 1,8-dioodooctane (DIO) in the active layer. DIO can be converted to hydrogen iodide (HI) under the acidic condition of PEDOT:PSS, and the HI chemically reduces the PEDOT:PSS with the appearance of an absorbance band at 800-1100 nm. The generation of I-2 is verified by the color change of starch. The reaction results in a decrease of its work function that hinders efficient hole collection. A strategy is proposed to circumvent the detrimental interaction by inserting an ultrathin (15 nm) active layer without DIO between the initial active layer and the PEDOT:PSS electrode. A power conversion efficiency of 10.1% is achieved for the metal electrode-free nonfullerene organic solar cells.
机译:具有可印刷顶部电极的金属电极的有机太阳能电池在实现光伏的低成本方面具有吸引力。可打印电极和有源层之间的相互作用对器件性能至关重要。在这项工作中,我们报告了可印刷聚合物电极(3,4-亚乙基氧基噻吩):聚 - (苯乙烯磺酸盐)(PEDOT:PSS)和活性的典型添加剂的化学相互作用层。 DIO可以在PEDOT的酸性条件下转化为氢碘化物(HI):PSS,HI在化学上减少PEDOT:PSS,在800-1100nm处具有吸光度带的外观。通过淀粉的颜色变化来验证I-2的产生。反应导致其工作功能降低,阻碍了有效的孔收集。提出了一种策略来规避通过在初始有源层和PEDOT:PSS电极之间插入没有DIO的超薄(15nm)有源层来规避有害的相互作用。为金属电极无氟联有机太阳能电池实现了10.1%的功率转换效率。

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