Non-Centrosymmetric 2D Nb3SeI7 with High In-Plane Anisotropy and Optical Nonlinearity
ADVANCED OPTICAL MATERIALS(2023)
摘要
Integrating anisotropy and nonlinearity of physical properties in 2D materials is of great importance to the progress of nanoelectronic, nanophotonic, and nano-optoelectronic applications. In this work, Nb3SeI7, a newly discovered ternary layered material with non-centrosymmetric lattices, is introduced, which exhibits strong second harmonic generation (SHG), in-plane anisotropic electricity, and light absorption. Symmetry breaking of 2D Nb3SeI7 induced by the polar off-center displacement of niobium leads to a high nonlinear optical response with a second-order susceptibility of 6.71 pm V-1 and a high anisotropic factor of photoresponsivity up to 4.6, which are higher than most of the 2D materials. These properties of 2D Nb3SeI7 create new possibilities for chip-integrated nonlinear optics devices and future-proof polarization-sensitive optoelectronic systems.
更多查看译文
关键词
in-plane anisotropy, Nb3SeI7, non-centrosymmetry, nonlinear optics, second harmonic generation
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要