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Fabrication of efficient formamidinium perovskite solar cells under ambient air via intermediate-modulated crystallization

机译：通过中间调制结晶在环境空气下制备高效甲脒太阳能电池

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摘要

Developing simple methods to synthesize perovskite layers under ambient air can facilitate the industrial production of perovskite solar cells (PSCs). While limited progress has been made for the ambient-air fabrication of formamidinium lead triiodide perovskite (alpha-FAPbI(3)) layers due to the coexisting non-perovskite polymorph (delta-FAPbI(3)). Here, a facile N-methyl pyrrolidone (NMP) additive-based method is proposed to produce FA-perovskite (FAPbI(3)) layers in ambient air and smooth, highly-crystallized and delta-phase free perovskite films are produced under humidity of similar to 40%. The resultant PSC delivers a power conversion efficiency (PCE) of 17.29%, similar to 20% enhancement from that of PSC produced from traditional dimethyl sulfoxide (DSMO) additive. It is found that a distinct FAI center dot PbI2 center dot NMP intermediate phase forms during the film growth, providing an alternative crystallization process different to that of traditional delta-FAPbI(3) intermediate route. The fine nucleation of FAI center dot PbI2 center dot NMP intermediate contributes a smooth and dense morphology to the final film. The rapid detachment of NMP molecule from the intermediate enables a direct formation of alpha-FAPbI(3) film, averting the incomplete delta- to alpha- phase conversion under ambient air. Due to the high film quality, a PCE of 13.55% is still remained after 30-day storage for unencapsulated device, demonstrating the reliability of our method for FA-perovsklte ambient-air fabrication.
机译：开发在环境空气下合成钙钛矿层的简单方法可以促进钙钛矿太阳能电池（PSC）的工业生产。虽然由于共存非钙钛矿多晶型物（Delta-Fapbi（3）），但是对甲脒铅三碘化锰钙钛矿（α-Fapbi（3））层的环境空气制备的有限进展。这里，提出了一种容易N-甲基吡咯烷酮（NMP）添加剂的方法，以在环境空气中产生FA-PEROVSKITE（FAPBI（3））层，并在湿度下产生平滑，高结晶的和Δ相自由钙钛矿薄膜类似于40％。得到的PSC可提供17.29％的功率转换效率（PCE），类似于由传统二甲基亚砜（DSMO）添加剂产生的PSC的20％增强。结果发现，在薄膜生长期间，不同的FAI中心点PBI2中心点NMP中间相形相表格，提供了与传统δ-FAPBI（3）中间途径不同的替代结晶过程。 Fai Center Dot PBI2中心点NMP中间体的细微成核含量为最终薄膜提供光滑和致密的形态。来自中间体的NMP分子的快速分离使得能够直接形成α-FAPBI（3）膜，使环境空气下的不完全δ至α相转换。由于薄膜质量高，PCE为13.55％的未封装装置仍然保持在30天的储存后，证明了我们对FA-PEROVSKLTE环境空气制造方法的可靠性。

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  • 来源
    《Solar Energy》 |2019年第7期|147-155|共9页
  • 作者

    Wang Gaoxiang; Wang Lipeng; Qiu Jianhang; Yan Zheng; Tai Kaiping; Yu Wei; Jiang Xin;

  • 作者单位

    Chinese Acad Sci IMR Shenyang Natl Lab Mat Sci SYNL Shenyang 110016 Liaoning Peoples R China|Univ Sci & Technol China Sch Mat Sci & Engn Hefei 230026 Anhui Peoples R China;

    Chinese Acad Sci IMR Shenyang Natl Lab Mat Sci SYNL Shenyang 110016 Liaoning Peoples R China|Univ Sci & Technol China Sch Mat Sci & Engn Hefei 230026 Anhui Peoples R China;

    Chinese Acad Sci IMR Shenyang Natl Lab Mat Sci SYNL Shenyang 110016 Liaoning Peoples R China;

    Shenyang Aerosp Univ Coll Energy & Environm Shenyang 110136 Liaoning Peoples R China;

    Chinese Acad Sci IMR Shenyang Natl Lab Mat Sci SYNL Shenyang 110016 Liaoning Peoples R China;

    Hebei Univ Coll Phys Sci & Technol Natl Local Joint Engn Lab New Energy Photoelect D Hebei Key Lab Opt Elect Informat & Mat Baoding 071002 Peoples R China;

    Chinese Acad Sci IMR Shenyang Natl Lab Mat Sci SYNL Shenyang 110016 Liaoning Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Perovskite solar cell; Formamidinium; Ambient-air fabrication; Intermediate; Crystallization;

    机译：Perovskite太阳能电池;甲脒;环境空气制造;中间体;结晶;

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