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首页> 外文期刊>ACS applied materials & interfaces >Elucidating the Key Role of a Lewis Base Solvent in the Formation of Perovskite Films Fabricated from the Lewis Adduct Approach
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Elucidating the Key Role of a Lewis Base Solvent in the Formation of Perovskite Films Fabricated from the Lewis Adduct Approach

机译:阐明Lewis碱溶剂在杠杆子加合物方法中形成钙钛矿薄膜中的关键作用

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摘要

High-quality perovskite films can be fabricated from Lewis acid base adducts through molecule exchange. Substantial work is needed to fully understand the formation mechanism of the perovskite films, which helps to further improve their quality. Here, we study the formation of CH3NH3PbI3 perovskite films by introducing some dimethylacetamide into the PbI2/N,N-dimethylformamide solution. We reveal that there are three key processes during the formation of perovskite films through the Lewis acid base adduct approach: molecule intercalation of solvent into the PbI2 lattice, molecule exchange between the solvent and CH3NH3I, and dissolution-recrystallization of the perovskite grains during annealing. The Lewis base solvents play multiple functions in the above processes. The properties of the solvent, including Lewis basicity and boiling point, play key roles in forming smooth perovskite films with large grains. We also provide some rules for choosing Lewis base additives to prepare high quality perovskite films through the Lewis adduct approach.
机译:通过分子交换,可以通过Lewis酸碱加合物制造高质量的钙钛矿薄膜。需要大量的工作来充分了解钙钛矿薄膜的形成机制,有助于进一步提高其质量。在此,我们通过将一些二甲基乙酰胺引入PBI2 / N,N-二甲基甲酰胺溶液来研究CH3NH3PBI3钙钛矿膜的形成。我们揭示了通过路易斯酸碱加合物的形成期间存在三个关键过程:通过路易斯酸碱加合物方法:溶剂在PBI2晶格中的分子嵌入,溶剂和CH 3 NH 3I之间的分子交换,以及在退火期间钙钛矿颗粒的溶解 - 再结晶。 Lewis基础溶剂在上述过程中发挥多种功能。溶剂的性质,包括刘易斯碱性和沸点,在形成具有大颗粒的光滑钙钛矿薄膜中起着关键作用。我们还提供了一些选择Lewis碱基添加剂的规则,以通过刘易斯加合方法制定高质量的钙钛矿薄膜。

著录项

  • 来源
    《ACS applied materials & interfaces》 |2017年第38期|共8页
  • 作者单位

    Tsinghua Univ Sch Mat Sci &

    Engn State Key Lab New Ceram &

    Fine Proc Beijing 100084 Peoples R China;

    Shandong Univ Sch Mat Sci &

    Engn Jinan 250061 Shandong Peoples R China;

    Tsinghua Univ Sch Mat Sci &

    Engn State Key Lab New Ceram &

    Fine Proc Beijing 100084 Peoples R China;

    Tsinghua Univ Sch Mat Sci &

    Engn State Key Lab New Ceram &

    Fine Proc Beijing 100084 Peoples R China;

    Tsinghua Univ Sch Mat Sci &

    Engn State Key Lab New Ceram &

    Fine Proc Beijing 100084 Peoples R China;

    Tsinghua Univ Grad Sch Shenzhen Inst Adv Mat Shenzhen 518055 Peoples R China;

    Shandong Univ Sch Mat Sci &

    Engn Jinan 250061 Shandong Peoples R China;

    Shenzhen Jiawei Solar Lighting Co Ltd New Ind Zone 1-4 Fuping Rd Shenzhen 518112 Guangdong Peoples R China;

    Tsinghua Univ Sch Mat Sci &

    Engn State Key Lab New Ceram &

    Fine Proc Beijing 100084 Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学工业;
  • 关键词

    perovskite film; Lewis acid base adduct; Lewis basicity; formation mechanism; solar cell;

    机译:Perovskite薄膜;Lewis酸碱加合物;刘易斯碱度;形成机制;太阳能电池;

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