Nanophotonics | |
Controllable nonlinear optical properties of different-sized iron phosphorus trichalcogenide (FePS 3 ) nanosheets | |
article | |
Danyun Xu1  Yumeng Shi1  Ying Li1  Chenliang Su1  Dianyuan Fan1  Zhe Guo1  Yudi Tu1  Xinzhe Li1  Yu Chen1  Zhesheng Chen1  Bingbing Tian1  Shuqing Chen1  | |
[1] International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, Institute of Microscale Optoelectronics, Shenzhen University;Laboratoire de Physique des Solides, Université Paris Saclay | |
关键词: electrochemical exfoliation; FePS3 nanosheets; gradient centrifugation; nonlinear optical properties; spatial self-phase modulation; | |
DOI : 10.1515/nanoph-2020-0336 | |
学科分类:社会科学、人文和艺术(综合) | |
来源: De Gruyter | |
【 摘 要 】
Two-dimensional iron phosphorus trichalcogenide (FePS 3 ) has attracted significant attention for its use in electricity, magnetism and optical fields due to its outstanding physical and chemical properties. Herein, FePS 3 was prepared using the chemical vapor transportation (CVT) method and then exfoliated by using fast electrochemical exfoliation. After gradient centrifugation, FePS 3 nanosheets with thicknesses ranging from 1.5 to 20 nm and lateral dimensions of 0.5–3 μm were obtained. By utilizing the spatial self-phase modulation (SSPM) effect, the relationships between the nonlinear refractive index and the size of the FePS 3 nanosheets were investigated in detail which revealed that the nonlinear refractive index can be effectively controlled by the size of the FePS 3 nanosheets. It is worth noting that the optimal FePS 3 nanosheets (3–5 layers thick and ∼1 μm in lateral dimensions) displayed the highest nonlinear refractive index of ∼10 −5 cm 2 W −1 . This work demonstrates the potential that FePS 3 nanosheets have for use in nonlinear optics or nonlinear optical devices.
【 授权许可】
CC BY
【 预 览 】
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