Tailoring the nonlinear optical performance of two-dimensional MoS2 nanofilms via defect engineering

Nanoscale ◽  
2018 ◽  
Vol 10 (37) ◽  
pp. 17924-17932 ◽  
Author(s):  
Xiaoyan Zhang ◽  
Saifeng Zhang ◽  
Yafeng Xie ◽  
Jiawei Huang ◽  
Lei Wang ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Annealing Process ◽  
Two Dimensional ◽  
Optical Performance ◽  
Defect Engineering

The nonlinear optical performance of layered MoS2 nanofilms was successfully modulated by defect engineering via a polyelectrolyte-assisted annealing process.

Rational design of a new chalcogenide with good infrared nonlinear optical performance: SrZnSnS4

2019 ◽  
Vol 7 (28) ◽  
pp. 8556-8561 ◽  
Author(s):  
Yiling Zhang ◽  
Dajiang Mei ◽  
Yi Yang ◽  
Wangzhu Cao ◽  
Yuandong Wu ◽  
...  
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Rational Design ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Layer Structure ◽  
Two Dimensional ◽  
Optical Performance ◽  
Nonlinear Optical Material ◽  
Orderly Arrangement

The new nonlinear optical material SrZnSnS4 is a two-dimensional layer structure with a large band gap (3.37 eV). The orderly arrangement of [ZnS4]6− and [SnS4]4− groups mainly contribute to the second harmonic generation effect (∼LiGaS2).

Defect-Engineering-Enhanced Electrical Manipulation of Anisotropic Excitons in Two-Dimensional ReS2

2021 ◽  
pp. 101562
Author(s):  
Shuyi Wu ◽  
Wen Pan ◽  
Jinlei Zhang ◽  
Chunlan Ma ◽  
Yun Shan ◽  
...  
Keyword(s):  
Two Dimensional ◽  
Defect Engineering ◽  
Electrical Manipulation

Investigation on nonlinear optical properties of V2C MXene at 1.9 μm

2021 ◽  
Author(s):  
Jinho Lee ◽  
Suh-Young Kwon ◽  
Ju Han Lee
Keyword(s):  
Optical Properties ◽  
Nonlinear Optics ◽  
Transition Metal ◽  
Energy Conversion ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Two Dimensional ◽  
Metal Carbides ◽  
Transition Metal Carbides ◽  
Application Fields

Two-dimensional (2-D) transition metal carbides, referred to as MXene, attracted considerable attention in various application fields such as, biosensors, biomedical areas, energy conversion, electrocatalysis, environmental sensing, and nonlinear optics and...

RECENT ADVANCES IN TWO-DIMENSIONAL PHOTONIC CRYSTALS SLAB STRUCTURE: DEFECT ENGINEERING AND HETEROSTRUCTURE

NANO ◽  
2007 ◽  
Vol 02 (01) ◽  
pp. 1-13 ◽  
Author(s):  
BONG-SHIK SONG ◽  
TAKASHI ASANO ◽  
SUSUMU NODA
Keyword(s):  
Photonic Crystals ◽  
Optical Sensors ◽  
Quantum Electrodynamics ◽  
Cavity Quantum Electrodynamics ◽  
Design Rule ◽  
Two Dimensional ◽  
Defect Engineering ◽  
Nanophotonic Devices ◽  
Multiple Wavelength ◽  
Accelerate Development

This paper presents a review on the selected highlights of highly-functional devices in two-dimensional photonic crystals slab structure. By introducing artificial defects in the photonic crystals (that is, defect engineering), novel photonic devices of line-defect waveguides and point-defect nanocavity are demonstrated. For more efficient manipulation of photons, the fundamentals of heterostructure photonic crystals are also reviewed. Heterostructures consist of multiple photonic crystals with different lattice-constants and they provide further high-functionalities such as multiple wavelength operation while maintaining optimized performance and the enhancement of photon manipulation efficiency. Because of the importance of high quality (Q) nanocavity for realization of nanophotonic devices, we also review the design rule of high Q nanocavities and present recent experiments on nanocavities with Q factors in excess of one million (~ 1.2 × 106). The progress of defect engineering and heterostructure in two-dimensional photonic crystals slab structure will accelerate development in ultrasmall photonic chips, cavity quantum electrodynamics, optical sensors, etc.

scholarly journals Robust trap effect in transition metal dichalcogenides for advanced multifunctional devices

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Lei Yin ◽  
Peng He ◽  
Ruiqing Cheng ◽  
Feng Wang ◽  
Fengmei Wang ◽  
...  
Keyword(s):  
Transition Metal ◽  
High Performance ◽  
Infrared Detector ◽  
Transition Metal Dichalcogenides ◽  
Two Dimensional ◽  
Electric Transport ◽  
Defect Engineering ◽  
Fast Switching ◽  
Metal Dichalcogenides ◽  
Poor Stability

Abstract Defects play a crucial role in determining electric transport properties of two-dimensional transition metal dichalcogenides. In particular, defect-induced deep traps have been demonstrated to possess the ability to capture carriers. However, due to their poor stability and controllability, most studies focus on eliminating this trap effect, and little consideration was devoted to the applications of their inherent capabilities on electronics. Here, we report the realization of robust trap effect, which can capture carriers and store them steadily, in two-dimensional MoS2xSe2(1-x) via synergistic effect of sulphur vacancies and isoelectronic selenium atoms. As a result, infrared detection with very high photoresponsivity (2.4 × 105 A W−1) and photoswitching ratio (~108), as well as nonvolatile infrared memory with high program/erase ratio (~108) and fast switching time, are achieved just based on an individual flake. This demonstration of defect engineering opens up an avenue for achieving high-performance infrared detector and memory.

Nonlinear optical responses in two-dimensional photonic crystals

2009 ◽  
Vol 518 (2) ◽  
pp. 470-472 ◽  
Author(s):  
Shin-ichiro Inoue ◽  
Shiyoshi Yokoyama
Keyword(s):  
Photonic Crystals ◽  
Nonlinear Optical ◽  
Two Dimensional ◽  
Optical Responses
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