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Highly Stable and Efficient Perovskite Solar Cells with 22.0% Efficiency Based on Inorganic-Organic Dopant-Free Double Hole Transporting Layers

机译：高度稳定，高效的钙钛矿太阳能电池，基于无机 - 有机掺杂剂双孔输送层的效率为22.0％

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摘要

Most of the high performance in perovskite solar cells (PSCs) have only been achieved with two organic hole transporting materials: 2,2 ',7,7 '-tetrakis(N,N-di-p-methoxyphenylamine)-9,9-spirobifluorene (Spiro-OMeTAD) and poly(triarylamine) (PTAA), but their high cost and low stability caused by the hygroscopic dopant greatly hinder the commercialization of PSCs. One effective alternative to address this problem is to utilize inexpensive inorganic hole transporting layer (i-HTL), but obtaining high efficiency via i-HTLs has remained a challenge. Herein, a well-designed inorganic-organic double HTL is constructed by introducing an ultrathin polymer layer dithiophene-benzene (DTB) between CuSCN and Au contact. This strategy not only enhances the hole extraction efficiency through the formation of cascaded energy levels, but also prevents the degradation of CuSCN caused by the reaction between CuSCN and Au electrode. Furthermore, the CuSCN layer also promotes the formation of a pinhole-free and compact DTB over layer in the CuSCN/DTB structure. Consequently, the PSCs fabricated with this CuSCN/DTB layer achieves the power conversion efficiency of 22.0% (certified: 21.7%), which is among the top efficiencies for PSCs based on dopant-free HTLs. Moreover, the fabricated PSCs exhibit high light stability under more than 1000 h of light illumination and excellent environmental stability at high temperature (85 degrees C) or high relative humidity (60% RH).
机译：钙钛矿太阳能电池（PSCs）中的大多数高性能仅通过两个有机空穴传输材料实现：2,2'，7,7'-左右（N，N-DI-P-甲氧基甲酰胺）-9,9-螺二氟芴（螺 - ometad）和聚（三芳基胺）（PTAA），但它们的高成本和稳定性由吸湿掺杂剂引起的稳定性大大阻碍了PSC的商业化。解决这个问题的一个有效替代方案是利用廉价的无机空穴传输层（I-HTL），但是通过I-HTL获得高效率仍然是挑战。这里，通过在CUSCN和Au接触之间引入超薄聚合物层二噻吩 - 苯（DTB）来构建精心设计的无机 - 有机双HT1。该策略不仅通过形成级联能量水平来提高空穴提取效率，而且还可以防止由CUSCN和Au电极之间的反应引起的CUSCN的降解。此外，CUSCN层还促进CUSCN / DTB结构中的层上的无孔和紧凑的DTB的形成。因此，用该CUSCN / DTB层制造的PSC可实现22.0％（认证：21.7％）的功率转换效率，这是基于无掺杂剂HTL的PSC的最高效率之一。此外，制造的PSC在高温（85℃）或高相对湿度（> 60％RH）下具有高于1000小时的低光稳定性，并且在高温（85℃）或高相对湿度（> 60％RH）下具有优异的环境稳定性。

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  • 来源
    《Advanced Functional Materials》 |2020年第28期|1908462.1-1908462.8|共8页
  • 作者

    Liu Chang; Zhang Luozheng; Li Yan; Zhou Xianyong; She Suyang; Wang Xingzhu; Tian Yanqin; Jen Alex K. Y.; Xu Baomin;

  • 作者单位

    Southern Univ Sci & Technol SUSTech Acad Adv Interdisciplinary Studies Shenzhen 518055 Guangdong Peoples R China|Southern Univ Sci & Technol Dept Mat Sci & Engn Shenzhen 518055 Guangdong Peoples R China|Southern Univ Sci & Technol Shenzhen Engn Res & Dev Ctr Flexible Solar Cells Shenzhen 518055 Guangdong Peoples R China;

    Southern Univ Sci & Technol SUSTech Acad Adv Interdisciplinary Studies Shenzhen 518055 Guangdong Peoples R China|Southern Univ Sci & Technol Dept Mat Sci & Engn Shenzhen 518055 Guangdong Peoples R China|Southern Univ Sci & Technol Shenzhen Engn Res & Dev Ctr Flexible Solar Cells Shenzhen 518055 Guangdong Peoples R China;

    Southern Univ Sci & Technol Dept Mat Sci & Engn Shenzhen 518055 Guangdong Peoples R China|Southern Univ Sci & Technol Shenzhen Engn Res & Dev Ctr Flexible Solar Cells Shenzhen 518055 Guangdong Peoples R China;

    Southern Univ Sci & Technol Dept Mat Sci & Engn Shenzhen 518055 Guangdong Peoples R China|Southern Univ Sci & Technol Shenzhen Engn Res & Dev Ctr Flexible Solar Cells Shenzhen 518055 Guangdong Peoples R China;

    Southern Univ Sci & Technol Dept Mat Sci & Engn Shenzhen 518055 Guangdong Peoples R China|Southern Univ Sci & Technol Shenzhen Engn Res & Dev Ctr Flexible Solar Cells Shenzhen 518055 Guangdong Peoples R China;

    Southern Univ Sci & Technol SUSTech Acad Adv Interdisciplinary Studies Shenzhen 518055 Guangdong Peoples R China|Southern Univ Sci & Technol Dept Mat Sci & Engn Shenzhen 518055 Guangdong Peoples R China|Southern Univ Sci & Technol Shenzhen Engn Res & Dev Ctr Flexible Solar Cells Shenzhen 518055 Guangdong Peoples R China;

    Southern Univ Sci & Technol Dept Mat Sci & Engn Shenzhen 518055 Guangdong Peoples R China|Southern Univ Sci & Technol Shenzhen Engn Res & Dev Ctr Flexible Solar Cells Shenzhen 518055 Guangdong Peoples R China;

    Univ Washington Dept Mat Sci & Engn Seattle WA 98195 USA|City Univ Hong Kong Dept Mat Sci & Engn Hong Kong Peoples R China;

    Southern Univ Sci & Technol Dept Mat Sci & Engn Shenzhen 518055 Guangdong Peoples R China|Southern Univ Sci & Technol Shenzhen Engn Res & Dev Ctr Flexible Solar Cells Shenzhen 518055 Guangdong Peoples R China;

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  • 正文语种 eng
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  • 关键词

    dopant-free; double hole transporting layers; high efficiency; perovskite solar cells; stabilities;

    机译：自由掺杂;双孔运输层;高效率;钙钛矿太阳能电池;稳定性;

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