Effect of defects and doping on the transmission spectrum enhancement of photonic crystal based on 2D-MoS₂

Abstract

In this paper, we present the structural and photoluminescence (PL) spectra of 2D-MoS2 and we report a theoretical investigation of the influence of Ag- and Au-doping on the transmission in 2D-MoS2 photonic crystal structure (PCS). A finite-difference time-domain (FDTD) technique and plane wave expansion method (PWE) have been introduced and adapted for periodic and aperiodic structures to extract the PC-bandgap and study the behavior of the transmission spectrum. The impact of the size of defects, the Ag- and Au-doping on the 2D-PC band structure and transmission spectrum has been visualized under the inclusion of the distribution of electromagnetic fields and the associated field maps. It has been shown that the Au-doping changes significantly the 2D-MoS2 PCS and as a result the transmission spectrum increases considerably. We can predict that 2D-MoS2 PC doped with Au is more convenient than doped with Ag in most applications involving optical transmission and waveguides for optoelectronics devices.

Removal of volatile organic compounds and odorous compounds for multilayer packaging recyclates using heated air purging

“…Due to enhanced barrier properties from moisture, gases, and other biological contaminants, single-layer plastic film is replaced by multilayer one [2]. Due to the increasing demand for packaging materials in recent times, concern about the safety and hygiene of products is forcing a significant development towards advanced techniques and method developments in packaging [3], [4].…”