Ductile deformation mechanism in semiconductor ?-Ag 2 S
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Authors
Li, Guodong
An, Qi
Morozov, Sergey I.
Duan, Bo
Goddard III, William A.
Zhang, Qingjie
Zhai, Pengcheng
Snyder, G. Jeffrey
Issue Date
2018
Type
Article
Language
Keywords
Alternative Title
Abstract
Inorganic semiconductor ?-Ag2S exhibits a metal-like ductile behavior at room temperature, but the origin of this high ductility has not been fully explored yet. Based on density function theory simulations on the intrinsic mechanical properties of ?-Ag2S, its underlying ductile mechanism is attributed to the following three factors: (i) the low ideal shear strength and multiple slip pathways under pressure, (ii) easy movement of Ag�"S octagon framework without breaking Ag?S bonds, and (iii) a metallic Ag?Ag bond forms which suppresses the Ag�"S frameworks from slipping and holds them together. The easy slip pathways (or easy rearrangement of atoms without breaking bonds) in ?-Ag2S provide insight into the understanding of the plastic deformation mechanism of ductile semiconductor materials, which is beneficial for devising and developing flexible semiconductor materials and electronic devices.
Description
Citation
Publisher
Nature Research
License
Creative Commons Attribution 4.0 International License
Journal
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Issue
PubMed ID
ISSN
2057-3960