材料科学
各向异性
铌
非线性光学
光电子学
二次谐波产生
纳米光子学
极化(电化学)
三元运算
光学
物理
激光器
化学
物理化学
计算机科学
冶金
程序设计语言
作者
Jia‐Peng Wang,Yuqiang Fang,Wen He,Quan Liu,Jierui Fu,Xinyu Li,Yue Liu,Bo Gao,Liang Zhen,Cheng‐Yan Xu,Fuqiang Huang,Alfred J. Meixner,Dai Zhang,Yang Li
标识
DOI:10.1002/adom.202300031
摘要
Abstract 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, Nb 3 SeI 7 , 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 Nb 3 SeI 7 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 Nb 3 SeI 7 create new possibilities for chip‐integrated nonlinear optics devices and future‐proof polarization‐sensitive optoelectronic systems.
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