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首页> 外文期刊>Advanced energy materials >Structure of Organometal Halide Perovskite Films as Determined with Grazing-Incidence X-Ray Scattering Methods
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Structure of Organometal Halide Perovskite Films as Determined with Grazing-Incidence X-Ray Scattering Methods

机译：掠入射X射线散射法测定有机金属卤化物钙钛矿薄膜的结构

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摘要

Grazing-incidence X-ray scattering (GIXS) methods have proven to be a valuable asset for investigating the morphology of thin films at different length scales. Consequently, GIXS has been applied to the fast-progressing field of organometal halide perovskites. This exciting class of materials has propelled research in the areas of cheap and sustainable photovoltaics, light emitting devices, and optoelectronics in general. Especially, perovskite solar cells (PSC) have seen a remarkable rise in power conversion efficiencies, crossing the 20% mark after only five years of research. This research news outlines GIXS studies focusing on the most challenging research topics in the perovskite field today: Current-voltage hysteresis, device reproducibility, and long-term stability of PSC are inherently linked to perovskite film morphology. On the other hand, film formation depends on the choice of precursors and processing parameters; understanding their interdependence opens possibilities to tailor film morphologies. Owing to their tunability and moisture resistance, 2D perovskites have recently attracted attention. Examples of GIXS studies with different measurement and data analysis techniques are presented, highlighting especially in-situ investigations on the many kinetic processes involved. Thus, an overview on the toolbox of GIXS techniques is linked to the specific needs of research into organometal halide perovskite optoelectronics.
机译：掠入射X射线散射（GIXS）方法已被证明是研究不同长度尺度的薄膜形态的宝贵资产。因此，GIXS已应用于有机金属卤化物钙钛矿的快速发展领域。这类令人兴奋的材料已推动了廉价和可持续光伏，发光器件和光电子学领域的研究。尤其是钙钛矿太阳能电池（PSC）的功率转换效率有了显着提高，仅经过5年的研究就超过了20％。该研究新闻概述了GIXS研究，其重点是当今钙钛矿领域最具挑战性的研究主题：电流电压磁滞，器件可再现性以及PSC的长期稳定性与钙钛矿膜的形态有着内在的联系。另一方面，成膜取决于前体的选择和加工参数。了解它们之间的相互依存，便有可能定制电影的形态。由于其可调性和耐湿性，二维钙钛矿最近受到关注。给出了使用不同测量和数据分析技术进行GIXS研究的示例，重点介绍了涉及许多动力学过程的原位研究。因此，对GIXS技术工具箱的概述与有机金属卤化物钙钛矿光电技术研究的特定需求相关。

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  • 来源
    《Advanced energy materials》 |2017年第16期|1700131.1-1700131.10|共10页
  • 作者

    Schlipf Johannes; Mueller-Buschbaum Peter;

  • 作者单位

    Tech Univ Munich, Phys Dept, Lehrstuhl Funkt Mat, James Franck Str 1, D-85748 Garching, Germany;

    Tech Univ Munich, Phys Dept, Lehrstuhl Funkt Mat, James Franck Str 1, D-85748 Garching, Germany;

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