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首页> 外文期刊>Japanese journal of applied physics >Liquid eutectic GaIn as an alternative electrode for PTB7:PCBM organic solar cells
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Liquid eutectic GaIn as an alternative electrode for PTB7:PCBM organic solar cells

机译：液态共晶GaIn作为PTB7：PCBM有机太阳能电池的替代电极

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Conventional vacuum deposition process of aluminum (Al) is costly, time-consuming and difficult to apply to the large-scale production of organic photovoltaic devices (OPV). This paper reports a vacuum-free fabrication process of poly[[4,8-bis(2-ethylhexyl) oxy] benzo[1,2-b: 4,5-b'] dithiophene-2,6-diyl][3-fluoro-2-[(2-ethylhexyl) carbonyl] thienophenediyl]:[6,6]-phenyl C71 butyric acid methyl ester (PTB7: PCBM) bulk heterojunction organic solar cell with liquid eutectic gallium-indium (EGaIn) electrode as an alternative to the common Al electrode. The insertion of a thin poly(ethylene oxide) (PEO) layer after depositing organic photoactive layer could help prevent the diffusion of liquid EGaIn into the active layer and allow the deposition of the EGaIn electrode. The PEO interfacial layer was formed by spin-coating from a mixed solvent of alcohol and water. Among different alcohol+water (methanol, ethanol, ethylene glycol, n-propanol, isopropanol, and isobutanol) mixed solvent tested, the n-propanol+water mixed solvent showed the greatest enhancement to the performance of OPVs. The improved device performance was attributed to the reactivity of mixed solvent n-propanol+water toward the surface of PTB7: PCBM active layer, which could help optimize surface morphology. (C) 2017 The Japan Society of Applied Physics
机译：常规的铝（Al）真空沉积工艺昂贵，费时且难以应用于有机光伏器件（OPV）的大规模生产。本文报道了聚[[4,8-双（2-乙基己基）氧基]苯并[1,2-b：4,5-b']二噻吩-2,6-二基] [3]的无真空制备工艺。 -氟-2-[（（2-乙基己基）羰基]噻吩二基]：[6,6]-苯基C71丁酸甲酯（PTB7：PCBM）本体异质结有机太阳能电池，液体共晶镓-铟（EGaIn）电极替代普通的铝电极。在沉积有机光敏层之后插入薄的聚环氧乙烷（PEO）层可以帮助防止液体EGaIn扩散到有源层中，并允许EGaIn电极沉积。 PEO界面层是由乙醇和水的混合溶剂通过旋涂形成的。在测试的不同醇+水（甲醇，乙醇，乙二醇，正丙醇，异丙醇和异丁醇）混合溶剂中，正丙醇+水混合溶剂显示出对OPV性能的最大增强。器件性能的提高归因于混合溶剂正丙醇+水对PTB7：PCBM活性层表面的反应性，这有助于优化表面形态。 （C）2017日本应用物理学会

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