Beijing Key Laboratory of Microstructure and Properties of Solids, Faculty of Materials and Manufacturing, Beijing University of Technique, Beijing 100124, China.
Molecules. 2022 Jun 14;27(12):3829. doi: 10.3390/molecules27123829.
The main aspects of material research: material synthesis, material structure, and material properties, are interrelated. Acquiring atomic structure information of electron beam sensitive materials by electron microscope, such as porous zeolites, organic-inorganic hybrid perovskites, metal-organic frameworks, is an important and challenging task. The difficulties in characterization of the structures will inevitably limit the optimization of their synthesis methods and further improve their performance. The emergence of integrated differential phase contrast scanning transmission electron microscopy (iDPC-STEM), a STEM characterization technique capable of obtaining images with high signal-to-noise ratio under lower doses, has made great breakthroughs in the atomic structure characterization of these materials. This article reviews the developments and applications of iDPC-STEM in electron beam sensitive materials, and provides an outlook on its capabilities and development.
材料合成、材料结构和材料性能，是相互关联的。通过电子显微镜获取电子束敏感材料（如多孔沸石、有机-无机杂化钙钛矿、金属有机骨架）的原子结构信息，是一项重要且具有挑战性的任务。结构特征的困难必然会限制其合成方法的优化，并进一步提高其性能。集成微分相衬扫描透射电子显微镜（iDPC-STEM）的出现，是一种能够在较低剂量下获得高信噪比图像的 STEM 表征技术，在这些材料的原子结构表征方面取得了重大突破。本文综述了 iDPC-STEM 在电子束敏感材料中的发展和应用，并对其能力和发展前景进行了展望。
