中国物理B ›› 2024, Vol. 33 ›› Issue (5): 57302-057302.doi: 10.1088/1674-1056/ad260c

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Effect of strain on structure and electronic properties of monolayer C4N4

Hao Chen(陈昊)1, Ying Xu(徐瑛)1, Jia-Shi Zhao(赵家石)2,†, and Dan Zhou(周丹)1,‡   

  1. 1 School of Physics, Changchun University of Science and Technology, Changchun 130022, China;
    2 School of Computer Science and Technology, Changchun University of Science and Technology, Changchun 130022, China
  • 收稿日期:2023-11-17 修回日期:2024-01-26 接受日期:2024-02-05 出版日期:2024-05-20 发布日期:2024-05-20
  • 通讯作者: Jia-Shi Zhao, Dan Zhou E-mail:zhaojiashi@cust.edu.cn;zhoudan@cust.edu.cn
  • 基金资助:
    Project support by the National Natural Science Foundation of China (Grant Nos. 11704044 and 12074140).

Effect of strain on structure and electronic properties of monolayer C4N4

Hao Chen(陈昊)1, Ying Xu(徐瑛)1, Jia-Shi Zhao(赵家石)2,†, and Dan Zhou(周丹)1,‡   

  1. 1 School of Physics, Changchun University of Science and Technology, Changchun 130022, China;
    2 School of Computer Science and Technology, Changchun University of Science and Technology, Changchun 130022, China
  • Received:2023-11-17 Revised:2024-01-26 Accepted:2024-02-05 Online:2024-05-20 Published:2024-05-20
  • Contact: Jia-Shi Zhao, Dan Zhou E-mail:zhaojiashi@cust.edu.cn;zhoudan@cust.edu.cn
  • Supported by:
    Project support by the National Natural Science Foundation of China (Grant Nos. 11704044 and 12074140).

摘要: The first-principles calculations are performed to examine structural, mechanical, and electronic properties at large strain for a monolayer C$_{4}$N$_{4}$, which has been predicted as an anchoring promising material to attenuate shuttle effect in Li-S batteries stemming from its large absorption energy and low diffusion energy barrier. Our results show that the ideal strengths of C$_{4}$N$_{4}$ under tension and pure shear deformation conditions reach 13.9 GPa and 12.5 GPa when the strains are 0.07 and 0.28, respectively. The folded five-membered rings and diverse bonding modes between carbon and nitrogen atoms enhance the ability to resist plastic deformation of C$_{4}$N$_{4}$. The orderly bond-rearranging behaviors under the weak tensile loading path along the [100] direction cause the impressive semiconductor-metal transition and inverse semiconductor-metal transition. The present results enrich the knowledge of the structure and electronic properties of C$_{4}$N$_{4}$ under deformations and shed light on exploring other two-dimensional materials under diverse loading conditions.

关键词: two-dimensional materials, strain effect, structural evolution, electronic properties

Abstract: The first-principles calculations are performed to examine structural, mechanical, and electronic properties at large strain for a monolayer C$_{4}$N$_{4}$, which has been predicted as an anchoring promising material to attenuate shuttle effect in Li-S batteries stemming from its large absorption energy and low diffusion energy barrier. Our results show that the ideal strengths of C$_{4}$N$_{4}$ under tension and pure shear deformation conditions reach 13.9 GPa and 12.5 GPa when the strains are 0.07 and 0.28, respectively. The folded five-membered rings and diverse bonding modes between carbon and nitrogen atoms enhance the ability to resist plastic deformation of C$_{4}$N$_{4}$. The orderly bond-rearranging behaviors under the weak tensile loading path along the [100] direction cause the impressive semiconductor-metal transition and inverse semiconductor-metal transition. The present results enrich the knowledge of the structure and electronic properties of C$_{4}$N$_{4}$ under deformations and shed light on exploring other two-dimensional materials under diverse loading conditions.

Key words: two-dimensional materials, strain effect, structural evolution, electronic properties

中图分类号:  (Other topics in electronic structure and electrical properties of surfaces, interfaces, thin films, and low-dimensional structures)

  • 73.90.+f
77.80.bn (Strain and interface effects) 83.10.Tv (Structural and phase changes) 87.15.Pc (Electronic and electrical properties)