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首页> 外文期刊>Advanced energy materials >A Facile Surface Passivation Enables Thermally Stable and Efficient Planar Perovskite Solar Cells Using a Novel IDTT-Based Small Molecule Additive
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A Facile Surface Passivation Enables Thermally Stable and Efficient Planar Perovskite Solar Cells Using a Novel IDTT-Based Small Molecule Additive

机译：使用新型IDTT的小分子添加剂，容纳表面钝化使热稳态和有效的平面钙钛矿太阳能电池能够实现

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摘要

Although perovskite solar cells (PSCs) have attracted enormous attention owing to their fascinating optoelectronic properties and solution processability, defects in PSCs, which adversely affect efficiency and stability, are still not completely resolved. Herein, a novel indacenodithieno[3,2-b]thiophene-based small molecule (SM) additive (IDTT-ThCz), capable of interacting with perovskite layers, is developed. In particular, the IDTT-ThCz, which can perform a surface passivation, is introduced into the perovskite layer to significantly suppress perovskite defects via antisolvent treatment. Furthermore, this facile surface passivation not only significantly improves the charge extraction capability, but also prevents perovskite degradation. The IDTT-ThCz-treated PSCs exhibits a power conversion efficiency (PCE) of 22.5% and retains 95% of its initial PCE after 500 h storage under thermal condition (85 degrees C), representing the most remarkable efficiency as well as stability among the SM additives reported to date.
机译：虽然钙钛矿太阳能电池（PSC）由于其迷人的光电性能和溶液加工性而引起了巨大的关注，但PSC的缺陷仍未完全解决。在本文中，开发了一种新的茚磺奈替肽[3,2-B]基于噻吩的小分子（SM）添加剂（IDTT-THCZ），其能够与钙钛矿层相互作用。特别地，可以进行表面钝化的IDTT-THCZ引入钙钛矿层中以通过反溶剂处理显着抑制钙钛矿缺陷。此外，这种容易面的表面钝化不仅显着提高了电荷提取能力，还可以防止钙钛矿降解。 IDTT-THCZ处理的PSCs表现出22.5％的功率转换效率（PCE），并在热条件（85摄氏度）下储存500小时后保留95％的初始PCE，代表最显着的效率以及稳定性迄今为止报告了SM添加剂。

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  • 来源
    《Advanced energy materials》 |2021年第16期|2003829.1-2003829.7|共7页
  • 作者

    Choi Hyuntae; Liu Xiaoyuan; Kim Hong Il; Kim Dohyun; Park Taiho; Song Seulki;

  • 作者单位

    Pohang Univ Sci & Technol POSTECH Dept Chem Engn 77 Cheongam Ro Pohang 37673 Gyeongbuk South Korea;

    Pohang Univ Sci & Technol POSTECH Dept Chem Engn 77 Cheongam Ro Pohang 37673 Gyeongbuk South Korea;

    Pohang Univ Sci & Technol POSTECH Dept Chem Engn 77 Cheongam Ro Pohang 37673 Gyeongbuk South Korea;

    Pohang Univ Sci & Technol POSTECH Dept Chem Engn 77 Cheongam Ro Pohang 37673 Gyeongbuk South Korea;

    Pohang Univ Sci & Technol POSTECH Dept Chem Engn 77 Cheongam Ro Pohang 37673 Gyeongbuk South Korea;

    Korea Res Inst Chem Technol KRICT Div Adv Mat Daejeon 34114 South Korea;

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  • 正文语种 eng
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  • 关键词

    perovskite solar cells; surface passivation; small molecule additives; thermal stability; surface defects;

    机译：Perovskite太阳能电池;表面钝化;小分子添加剂;热稳定性;表面缺陷;

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