Interlayer interaction mechanism and its regulation on optical properties of bilayer SiCNSs

作     者：孔双双 刘卫凯 于晓霞 李亚林 杨留柱 马昀 房晓勇 Shuang-Shuang Kong;Wei-Kai Liu;Xiao-Xia Yu;Ya-Lin Li;Liu-Zhu Yang;Yun Ma;Xiao-Yong Fang

作者机构：Key Laboratory for Microstructural Material Physics of Hebei ProvinceSchool of ScienceYanshan UniversityQinhuangdao 066004China School of Mechanical EngineeringYanshan UniversityQinhuangdao 066004China 

出 版 物：《Frontiers of physics》 (物理学前沿（英文版）)

年 卷 期：2023年第18卷第4期

页      面：227-238页

核心收录：

学科分类：070207[理学-光学] 07[理学] 08[工学] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：supported by Hebei Natural Science Foundation(Grant No.A2021203030) the National Natural Science Foundation of China(Grant No.11574261) 

主　　题：SiC nanosheets bilayer nanosheets interlayer coupling model bandgap structure optical properties 

摘      要：Silicon carbide nanosheets(SiCNSs)have a very broad application prospect in the field of new two-dimensional(2D)*** this paper,the interlayer interaction mechanism of bilayer SiCNSs(BL-SiCNSs)and its effect on optical properties are studied by first *** the charge and dipole moment of the layers as parameters,an interlayer coupling model is constructed which is more convenient to control the photoelectric *** results show that the stronger the interlayer coupling,the smaller the band gap of *** interlayer coupling also changes the number of absorption peaks and causes the red or blue shift of absorption *** strong interlayer coupling can produce obvious dispersion and regulate the optical transmission *** larger the interlayer distance,the smaller the permittivity in the vertical ***,the permittivity of the parallel direction is negative in the range of 150-300 nm,showing obvious *** is expected that the results will provide a meaningful theoretical basis for further study of SiCNSs optoelectronic devices.