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首页> 外文期刊>Energy & environmental science >High-performance all-small-molecule organic solar cells without interlayers
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High-performance all-small-molecule organic solar cells without interlayers

机译：高性能全小分子有机太阳能电池，没有中间层

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摘要

In this work, we report a two-step solvent treatment (TSST) strategy to construct high-performance all-small-molecule solar cells (all-SMSCs) without interfacial layers (IFLs), which only consist of an active layer (AL) sandwiched between two electrodes. The chlorinated ITO (ITO-Cl) anode exhibits down-shifted work functions and improved surface energy enabled by the presence of a large density of chloride ions caused by the surface chlorination of ITO. Moreover, the Al cathode shows elevated vacuum level and reduced interfacial trap density enabled by surface treatment of the active layer with polar methanol. The ITO-Cl/AL/Al-based devices form Ohmic contacts and boost the efficiency of the B1:BTP-eC9 system to 14.86%, which is higher than that of the control device (13.92%) with two IFLs. The use of this TSST strategy in the other two all-small-molecule systems is also confirmed, demonstrating its good generality. This strategy can significantly improve device stabilities, extend the life cycles of ITO substrates, and reduce modules' production costs.
机译：在这项工作中，我们报告了一种两步的溶剂处理（TSST）策略来构建高性能全小分子太阳能电池（全-MSCs）而没有界面层（IFL），其仅由有源层（AL）组成夹在两个电极之间。氯化ITO（ITO-CL）阳极呈现下偏移的工作功能和改进的表面能，通过ITO的表面氯化引起的大密度氯离子的存在。此外，Al阴极显示出升高的真空水平和通过具有极性甲醇的活性层的表面处理而降低的界面捕集密度降低。基于ITO-CL / Al / Al的设备形成欧姆触点，并将B1：BTP-EC9系统的效率提高至14.86％，其高于控制装置（13.92％）的效率，具有两个IFL。在另外两个全小分子系统中使用这种TST策略也被证实，证明了其良好的普遍性。该策略可以显着提高设备稳定性，延长ITO基板的生命周期，并降低模块的生产成本。

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  • 来源
    《Energy & environmental science》 |2021年第5期|3174-3183|共10页
  • 作者

    Sun Rui; Wu Yao; Guo Jie; Wang Yuheng; Qin Fei; Shen Bingxiu; Li Donghui; Wang Tao; Li Yaowen; Zhou Yinhua; Lu Guanghao; Li Yongfang; Min Jie;

  • 作者单位

    Wuhan Univ Inst Adv Studies Wuhan 430072 Peoples R China;

    Wuhan Univ Inst Adv Studies Wuhan 430072 Peoples R China;

    Wuhan Univ Inst Adv Studies Wuhan 430072 Peoples R China;

    Xi An Jiao Tong Univ Frontier Inst Sci & Technol Xian 710054 Peoples R China;

    Huazhong Univ Sci & Technol Wuhan Natl Lab Optoelect Wuhan 430074 Peoples R China|Huazhong Univ Sci & Technol Sch Opt & Elect Informat Wuhan 430074 Peoples R China;

    Soochow Univ Lab Adv Optoelect Mat Coll Chem Chem Engn & Mat Sci Suzhou 215123 Peoples R China;

    Wuhan Univ Technol State Key Lab Silicate Mat Architectures Wuhan 430070 Peoples R China;

    Wuhan Univ Technol State Key Lab Silicate Mat Architectures Wuhan 430070 Peoples R China;

    Huazhong Univ Sci & Technol Wuhan Natl Lab Optoelect Wuhan 430074 Peoples R China|Huazhong Univ Sci & Technol Sch Opt & Elect Informat Wuhan 430074 Peoples R China;

    Xi An Jiao Tong Univ Frontier Inst Sci & Technol Xian 710054 Peoples R China;

    Beijing Natl Lab Mol Sci Beijing 100190 Peoples R China;

    Wuhan Univ Inst Adv Studies Wuhan 430072 Peoples R China|Beijing Natl Lab Mol Sci Beijing 100190 Peoples R China|Zhengzhou Univ Minist Educ Key Lab Mat Proc & Mold Zhengzhou 450002 Peoples R China;

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