Piezoelectricity in two-dimensional covalent organic frameworks

被引：2

作者：

Xiang, Hui ^{[1
,2
]}

Xu, Bo ^{[1
,2
]}

Xia, Yidong ^{[1
,2
]}

Yin, Jiang ^{[1
,2
,3
]}

Liu, Zhiguo ^{[1
,2
,3
]}

机构：

[1] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China

[2] Nanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China

[3] Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China

来源：

JOURNAL OF APPLIED PHYSICS | 2017年 / 121卷 / 22期

基金：

中国国家自然科学基金;

关键词：

TOTAL-ENERGY CALCULATIONS; FIELD-EFFECT TRANSISTORS; WAVE BASIS-SET; SKIN APPLICATIONS; ARTIFICIAL SKIN; ELECTRONIC SKIN; LARGE-AREA; PRESSURE; CRYSTALLINE; SENSORS;

D O I：

10.1063/1.4985606

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

First-principles calculations were used to investigate piezoelectricity in two-dimensional covalent organic frameworks, including those composed of C9H3N3 and C6H3B3O3 monolayers. We mainly studied the elastic stiffness constants and piezoelectric tensors of these networks using their clamped-ion and relaxed-ion components. Our results show that both of these organic materials are piezoelectric along the armchair direction because of their noncentrosymmetric structures. The strain effects on the bandgaps of these monolayers have almost no effect on their piezoelectric performance. Additionally, the dynamic stabilities of the C9H3N3 and C6H3B3O3 monolayers were examined. Despite their low piezoelectric coefficients, the piezoelectricity in these two-dimensional covalent organic frameworks is promising for applications such as biocompatible nanoelectromechanical systems because they offer potential for enhanced biocompatibility when compared with inorganic materials. Published by AIP Publishing.

引用

页数：6

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