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Updated: Jul 21, 2026

Comprehensive Characterization of Extended Defects in Semiconductor Materials by a Scanning Electron Microscope
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Published on: May 28, 2016

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传输电子显微镜剥离了矿量子点的表面缺陷,以改善晶体结构

Longfei Yuan1, Taixin Zhou1, Fengmin Jin1

  • 1School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China.

Materials (Basel, Switzerland)
|September 9, 2023
PubMed
概括

电子束辐射可以去除矿量子点 (PeQD) 的表面缺陷,优化其晶体结构以获得更清晰的图像. 这种电子束剥离技术增强了这些敏感纳米材料的表征.

关键词:
[PbBr6]4− 八面体中的八面体.缺陷的缺陷 缺陷的缺陷矿的量子点是因为矿的量子点.传输电子显微镜的使用

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Quantitative Atomic-Site Analysis of Functional Dopants/Point Defects in Crystalline Materials by Electron-Channeling-Enhanced Microanalysis07:24

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A perfect crystal, in theory, has a uniform structure with the same unit cell and lattice points throughout. However, any deviation from this periodic arrangement is known as an imperfection or defect. These defects can be categorized into three types: point, line, and plane defects.Point defects occur when there is a deviation from the ideal due to missing atoms, displaced atoms, or additional atoms. These imperfections might occur due to imperfect packing during crystallization or because of...
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Schottky defects arise when some lattice points in a crystal, such as those in NaCl, remain unoccupied, creating lattice vacancies without disturbing the overall electrical neutrality of the crystal. This defect is common in ionic crystals where the positive and negative ions are similar in size, as seen in sodium chloride and cesium chloride. The presence of Schottky defects enables the crystal to conduct electricity to a small extent through an ionic mechanism. Electric fields cause nearby...
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Imperfections in Crystal Structure: Non-Stoichiometric Defects

Non-stoichiometric defects refer to a type of defect in the crystal structure of a compound where the ratio of its constituent elements deviates from the ideal stoichiometric ratio. There are two main types of non-stoichiometric defects: metal excess defects and metal deficiency defects.Metal excess defects occur when there is a slight surplus of metal ions than what is required by the stoichiometric ratio of the compound. For example, heating a sodium chloride crystal in sodium vapor results...