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Nitrogen-Dopant-Induced Organic-Inorganic Hybrid Perovskite Crystal Growth on Carbon Nanotubes

机译：碳纳米管上氮掺杂引起的有机-无机杂化钙钛矿晶体的生长

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摘要

Interfacial engineering of organic inorganic halide perovskites in conjunction with different functional materials is anticipated to offer novel heterojunction structures with unique functionalities. Unfortunately, complex material compositions and structures of the organic inorganic hybrid materials make it difficult to tailor a desirable intermolecular interaction at the interface. Spontaneous and highly specific nucleation of perovskite crystals, that is, methylammonium lead iodide perovskite (CH3NH3PbI3, MAPbI(3)) at nitrogen doped carbon nanotube (NCNT) surfaces for the self-assembly of MAPbI(3)/NCNT hybrids is reported. It is demonstrated that the lone-pair electrons of pyridinic nitrogen-dopant sites at NCNTs mediate specific interactions with the cationic component in the perovskite structure and serve as the nucleation sites via coordinate bonding formation, as supported by X-ray photoelectron spectroscopy and density functional theory calculation. The potential suitability of MAPbI(3)/NCNT hybrids is presented for highly sensitive and selective NO2 sensing layer. This work suggests a reliable self-assembly route to the molecular level hybridization of organic inorganic halide perovskites by employing the substitutional dopant sites at graphene-based nanomaterials.
机译：预计有机无机卤化物钙钛矿与不同功能材料的界面工程将提供具有独特功能的新型异质结结构。不幸的是，有机无机杂化材料的复杂的材料组成和结构使得难以在界面处定制所需的分子间相互作用。钙钛矿晶体，即甲基铵碘化铅钙钛矿（CH3NH3PbI3，MAPbI（3））在氮掺杂碳纳米管（NCNT）表面自发且高度特异地成核的报道为MAPbI（3）/ NCNT杂化物的自组装。 X射线光电子能谱和密度泛函表明，NCNTs上的吡啶氮掺杂位点的孤对电子介导与钙钛矿结构中阳离子组分的特定相互作用，并通过配位键形成充当成核位点。理论计算。提出了MAPbI（3）/ NCNT杂化物的潜在适用性，用于高度敏感和选择性的NO2传感层。这项工作表明通过使用基于石墨烯的纳米材料上的取代掺杂位点，可以实现有机无机卤化物钙钛矿分子水平杂交的可靠的自组装路线。

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  • 来源
    《Advanced Functional Materials》 |2019年第30期|1902489.1-1902489.9|共9页
  • 作者

    Lee Gil Yong; Yang Moon Young; Kim Dong-Ha; Lim Joonwon; Byun Jinwoo; Choi Dong Sung; Lee Ho Jin; Nam Yoon Sung; Kim Il-Doo; Kim Sang Ouk;

  • 作者单位

    Korea Adv Inst Sci & Technol, Inst NanoCentury, Natl Creat Res Initiat Ctr Multidimens, Directed Nanoscale Assembly,Dept Mat Sci & Engn, Daejeon 34141, South Korea;

    Korea Adv Inst Sci & Technol, Inst NanoCentury, Daejeon 34141, South Korea;

    Korea Adv Inst Sci & Technol, Inst NanoCentury, Dept Mat Sci & Engn, Daejeon 34141, South Korea;

    Korea Adv Inst Sci & Technol, Inst NanoCentury, Natl Creat Res Initiat Ctr Multidimens, Directed Nanoscale Assembly,Dept Mat Sci & Engn, Daejeon 34141, South Korea;

    Korea Adv Inst Sci & Technol, Inst NanoCentury, Natl Creat Res Initiat Ctr Multidimens, Directed Nanoscale Assembly,Dept Mat Sci & Engn, Daejeon 34141, South Korea;

    Korea Adv Inst Sci & Technol, Inst NanoCentury, Natl Creat Res Initiat Ctr Multidimens, Directed Nanoscale Assembly,Dept Mat Sci & Engn, Daejeon 34141, South Korea;

    Korea Adv Inst Sci & Technol, Inst NanoCentury, Natl Creat Res Initiat Ctr Multidimens, Directed Nanoscale Assembly,Dept Mat Sci & Engn, Daejeon 34141, South Korea;

    Korea Adv Inst Sci & Technol, Inst NanoCentury, Dept Mat Sci & Engn, Daejeon 34141, South Korea;

    Korea Adv Inst Sci & Technol, Inst NanoCentury, Dept Mat Sci & Engn, Daejeon 34141, South Korea;

    Korea Adv Inst Sci & Technol, Inst NanoCentury, Natl Creat Res Initiat Ctr Multidimens, Directed Nanoscale Assembly,Dept Mat Sci & Engn, Daejeon 34141, South Korea;

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  • 正文语种 eng
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  • 关键词

    carbon nanotube; methylammonium lead iodide; nitrogen doping; NO2 gas sensor; organic-inorganic halide perovskite;

    机译：碳纳米管;甲基丙酸铅;氮掺杂;No2气体传感器;有机 - 无机卤化物钙钛矿;

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