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首页> 外文会议>2016 IEEE International Conference on Electro Information Technology >Engineering of ambient processing conditions to control solvent induced intermediate phase in mixed halide organic-inorganic perovskite (CH3NH3PbI3−xClx) film for efficient planar perovskite solar cells
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Engineering of ambient processing conditions to control solvent induced intermediate phase in mixed halide organic-inorganic perovskite (CH3NH3PbI3−xClx) film for efficient planar perovskite solar cells

机译：环境处理条件的工程设计，以控制溶剂诱导的卤化物有机-无机钙钛矿（CH3NH3PbI3-xClx）薄膜中的中间相，从而获得有效的平面钙钛矿太阳能电池

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摘要

One of the challenges with organic-inorganic hybrid perovskite films, is its degradation from moisture present in ambient atmosphere, which severely restricts its crystallization process using thermal annealing in ambient air having high humidity levels. A widely used method for perovskite film crystallization is use of thermal annealing in inert atmosphere to rapidly crystallize the film in perovskite phase, immediately after its deposition. Herein, we have explored several methods of crystallization of mixed-halide perovskite (CH3NH3PbI3-xClx) film crystallization in ambient air with an aim to obtain high crystallinity and complete conversion to perovskite phase in ambient air assisted with and without thermal annealing. We optimized the crystallization process of perovskite film by exposing the film in ambient air, partially exposure to air followed by thermal annealing, exposing it to air-flow at room temperature. Perovskite films were spin coated inside the N2 filled glove box and immediately were taken outside in air with 40% relative humidity (RH). Crystallized mixed-halide perovskite films obtained from different approaches were then used to fabricate planar perovskite solar cells with device structure as ITO/PEDOT:PSS/CH3NH3PbI3-xClx/PC60BM/Rhodamine/Ag. It was concluded that humidity plays an important role in crystallization of perovskite films in ambient air, but additional treatment could lead to improved perovskite crystallinity.
机译：有机-无机杂化钙钛矿薄膜的挑战之一是其从周围大气中存在的水分中降解，这严重限制了其在高湿度环境空气中使用热退火的结晶过程。钙钛矿膜结晶的一种广泛使用的方法是在惰性气氛下使用热退火，在沉积后立即在钙钛矿相中快速结晶该膜。本文中，我们探索了几种混合卤化物钙钛矿（CH3NH3PbI3-xClx）薄膜在环境空气中的结晶方法，旨在获得高结晶度并在有或没有热退火的情况下在环境空气中完全转化为钙钛矿相。我们通过将钙钛矿薄膜暴露在环境空气中，部分暴露于空气中，然后进行热退火，使其在室温下暴露于气流中来优化钙钛矿薄膜的结晶过程。将钙钛矿薄膜旋涂在装有N2的手套箱内，并立即将其置于空气中，相对湿度（RH）为40％。然后，将从不同方法获得的结晶混合卤化物钙钛矿薄膜用于制造平面结构钙钛矿太阳能电池，其器件结构为ITO / PEDOT：PSS / CH3NH3PbI3-xClx / PC60BM /若丹明/ Ag。结论是，湿度在周围空气中钙钛矿薄膜的结晶中起着重要作用，但是额外的处理可以改善钙钛矿的结晶度。

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  • 会议地点 Grand Forks ND(US)
  • 作者

    Ashish Dubey; Eman A. Gaml; Nirmal Adhikari; Khan Mamun Reza; H. Zeyada; Qiquan Qiao;

  • 作者单位

    Center for Advanced Photovoltaics, Electrical Engineering and Computer Science Department, South Dakota State University, Brookings, 57007, USA;

    Department of Physics, Faculty of Science, Damietta University, Egypt;

    Center for Advanced Photovoltaics, Electrical Engineering and Computer Science Department, South Dakota State University, Brookings, 57007, USA;

    Center for Advanced Photovoltaics, Electrical Engineering and Computer Science Department, South Dakota State University, Brookings, 57007, USA;

    Department of Physics, Faculty of Science, Damietta University, Egypt;

    Center for Advanced Photovoltaics, Electrical Engineering and Computer Science Department, South Dakota State University, Brookings, 57007, USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Annealing; X-ray scattering; Moisture; Morphology; Decision support systems; Films;

    机译：退火; X射线散射;水分;形态学;决策支持系统;薄膜;

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