DataVXAdvanced Materials InterfacesPaper
journal article·2022-09

Study of Structural Evolution at Interfaces and Surfaces of PbSe Nanocrystals by In Situ Transmission Electron Microscopy

Feng Cheng, Yongfa Cheng, Linyuan Lian, Luying Li, Tianyi Zhang, Yang Yue, Siliang Wang, Zhi Zhang, Jianbing Zhang, Yihua Gao

Advanced Materials Interfaces· Volume 9· Issue 26
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Source abstract

Abstract

Abstract The interfaces and surfaces of nanocrystals (NCs) have a great influence on their stability and chemical activities. As effective ways of tailoring surfaces and interfaces of NCs, high‐energy electron beam and temperature are utilized in an in situ transmission electron microscope to study the structural transformation processes at surfaces and interfaces of PbSe NC at atomic scale. The results show that with the combined effect of high‐energy electron beam and high temperature, the atoms at NC interfaces tend to reconstruct themselves to reduce the orientational difference and release the interfacial strain. The structural transformation at the NC surfaces is comparatively slower, which will lead to reduced local surface energies. The systematic study of the structural transformation processes at the NC interfaces and surfaces can better define the corresponding critical points of experimental conditions, which will facilitate accurate surface and interface engineering at specific regions of NCs at atomic resolution.
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Research context

Nanomaterials

OpenAlex topics: Quantum Dots Synthesis And Properties · Chalcogenide Semiconductor Thin Films · Copper-based nanomaterials and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education Institutes of Physical Science and Information Technology Anhui University Hefei 230601 P. R. China

Center for Nanoscale Characterization & Devices Wuhan National Laboratory for Optoelectronics and School of Physics Huazhong University of Science and Technology 1037 Luoyu Road Wuhan Hubei 430074 P. R. China

School of Optical and Electronic Information Engineering Research Center for Functional Ceramics Ministry of Education Huazhong University of Science and Technology 1037 Luoyu Road Wuhan Hubei 430074 P. R. China

Funding

National Natural Science Foundation of China · Fundamental Research Funds for the Central Universities · Natural Science Foundation of Anhui Province

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