Passive photonic diodes based on natural van der Waals heterostructures

Nanophotonics

article

Jie Li¹  Shuangchun Wen¹  Lin Du¹  Jing Huang¹  Yuan He¹  Jun Yi¹  Lili Miao¹  Chujun Zhao¹ 

[1] Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education & Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices, School of Physics and Electronics, Hunan University

关键词: franckeite;    nonlinear optics;    photonic diode;    spatial self-phase modulation;    ultrafast carrier dynamics;    Z-scan;   

DOI  :  10.1515/nanoph-2020-0442

学科分类：社会科学、人文和艺术（综合）

来源: De Gruyter

【 摘 要 】

Van der Waals heterostructures are composed of stacked atomically thin two-dimensional (2D) crystals to provide unprecedented functionalities and novel physics. Franckeite, a naturally occurring van der Waals heterostructure consisting of superimposed SnS 2 -like and PbS-like layers alternately, shows intriguing potential in versatile optoelectronic applications. Here, we have prepared the few-layer franckeite via liquid-phase exfoliation method and characterized its third-order nonlinearity and ultrafast dynamics experimentally. We have found that the layered franckeite shows low saturable intensity, large modulation depth and picosecond ultrafast response. We have designed the passive photonic diodes based on the layered franckeite/C 60 cascaded film and suspension configuration and found that the passive photonic diodes exhibit stable nonreciprocal transmission of light. The experimental results show the excellent nonlinear optical performance and ultrafast response of the layered franckeite, which may make inroad for the cost effective and reliable high-performance optoelectronic devices.

【 授权许可】

CC BY