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首页> 外文期刊>Thin Solid Films >One-step method for the fabrication of high-quality perovskite thin-films under ambient conditions: Stability, morphological, optical, and electrical evaluation
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One-step method for the fabrication of high-quality perovskite thin-films under ambient conditions: Stability, morphological, optical, and electrical evaluation

机译：在环境条件下制备高质量钙钛矿薄膜的一步法：稳定性，形态，光学和电气评估

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摘要

Stability is still a property that limits the commercialization of perovskite solar cells. Thus, with the development of continuous deposition methods, it is essential to determine their feasibility in terms of stability, and not only on the efficiency of the devices produced. In this work, a hot air blow-drying (HABD) method is proposed as an alternative for the deposition of CH3NH3PbI3 (MAPbI) perovskite thin-films. The ability of HABD to produce homogeneous and stable thin-films was systematically studied and compared with those produced with air at standard conditions (25 degrees C, 25% relative humidity). The MAPbI thin-films were characterized by infrared spectroscopy and X-ray diffraction revealing that air temperature rules the film hydration. Partial degradation after using air at standard conditions was observed in contrast with the stable and pure perovskite phase obtained when using air heated at 90 C. The influence of solution concentration on the surface coverage was determined by scanning electron and atomic force microscopies. It was found that 4 mu L. of precursors solution (0.434 M) produced a homogeneous MAPbI thin-film with similar to 180 nm thickness and roughness of (Rq similar to 29 nm) covering a 6.25 cm(2) area. Moreover, the outstanding optical and electrical properties of MAPbI were not affected by the deposition procedure. Remarkably, degradation tests demonstrate that our HABD method is capable of producing stable MAPbI thin-films with excellent resistance to degradation at ambient conditions (up to 15 days), which makes it a promising low-cost and easy to use method for the continuous fabrication of perovskite solar cells.
机译：稳定性仍然是限制钙钛矿太阳能电池的商业化的财产。因此，随着连续沉积方法的发展，必须在稳定性方面确定其可行性，而不仅仅是对所产生的装置的效率。在这项工作中，提出了一种热风吹干（HABD）方法作为CH3NH3PBβ（MAPBI）钙钛矿薄膜沉积的替代方案。系统地研究了HABD生产均匀且稳定的薄膜的能力，并与标准条件下的空气（25℃，25％相对湿度）产生的那些相比。 MAPBI薄膜的特征在于红外光谱和X射线衍射，揭示空气温度规则薄膜水合。在使用在90℃下加热的空气时获得的标准条件下使用空气后使用空气的部分降解。通过扫描电子和原子力显微镜测定溶液浓度对表面覆盖物上的溶液浓度对表面覆盖的影响。发现4μL前体溶液（0.434m）制备了均匀的MAPBI薄膜，其具有与覆盖6.25cm（2）区域的（RQ类似于29nm）的180nm厚度和粗糙度。此外，MAPBI的出色光学和电气特性不受沉积过程的影响。值得注意的是，降解测试表明，我们的HABD方法能够产生稳定的MAPBI薄膜，其在环境条件下具有优异的降解性（最多15天），这使其成为连续制造的有希望的低成本且易于使用的方法。钙钛矿太阳能电池。

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  • 来源
    《Thin Solid Films》 |2021年第1期|138438.1-138438.11|共11页
  • 作者

    Del Angel-Olarte Cesar; Moreno-Garcia Harumi; Gabriela-Palestino;

  • 作者单位

    Univ Autonoma San Luis Potosi Fac Ciencias Quim Av Manuel Nava 6 San Luis Potosi 78210 SLP Mexico|Univ Autonoma San Luis Potosi Ctr Invest Ciencias Salud & Biomed Av Sierra Leona 550 Lomas 2a Secc San Luis Potosi 78210 San Luis Potosi Mexico;

    Univ Autonoma San Luis Potosi Coordinac Innovac & Aplicac Ciencia & Tecnol CIAC Alvaro Obregon 64 San Luis Potosi 78000 SLP Mexico;

    Univ Autonoma San Luis Potosi Fac Ciencias Quim Av Manuel Nava 6 San Luis Potosi 78210 SLP Mexico|Univ Autonoma San Luis Potosi Ctr Invest Ciencias Salud & Biomed Av Sierra Leona 550 Lomas 2a Secc San Luis Potosi 78210 San Luis Potosi Mexico;

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  • 关键词

    perovskite; thin-films; blow-drying; degradation;

    机译：Perovskite;薄膜;吹干;降解;

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