Polarization Sensitive Photodetectors Based on Two-Dimensional WSe2

Abstract

In this work we show the possibility of imparting polarization-sensitive properties to two-dimensional films of graphene-like semiconductors, using WSe2 as an example, by the application of ordered silver triangular nanoprisms. In addition, such nanoprisms made it possible to increase the optical sensitivity of optical detectors created on two-dimensional films by a factor of five due to surface plasmon resonance. The peculiarities of the surface plasmon resonance were shown by theoretical modeling, and the optimal conditions of its occurrence were determined. This article demonstrates an effective approach to creating spectrally selective, polarization-sensitive detectors based on two-dimensional graphene-like semiconductors.

Research of Photodetectors Based On Two-Dimensional Materials

“…Polarization-sensitive photodetectors of twodimensional WSe2 thin films are anticipated to play a significant role in optical applications and advance the advancement of optoelectronic technology in the future with more research on twodimensional materials (Fig. 2) [6].…”

Multiple-polarization-sensitive photodetector Based on a plasmonic metasurface

“…However, the application of photodetectors for the detection of CPL and LPL is seriously hindered by their intrinsic properties, such as small chirality or anisotropy, low carrier mobility, and limited response time. [20][21][22] Two-dimensional (2D) materials have attracted extensive attention as promising candidates for their excellent electronic and optical properties, such as high channel mobility, fast photoswitching time, and high quantum efficiency. [23][24][25] Plasmonic metasurfaces have shown a remarkable ability to realize light-matter interaction by confining incident light on the surface of a subwavelength metallic structure and are widely used in various applications, such as polarization manipulation, 26 structural coloring 27 and metalens.…”

“…However, the application of photodetectors for the detection of CPL and LPL is seriously hindered by their intrinsic properties, such as small chirality or anisotropy, low carrier mobility, and limited response time. 20–22 Two-dimensional (2D) materials have attracted extensive attention as promising candidates for their excellent electronic and optical properties, such as high channel mobility, fast photo-switching time, and high quantum efficiency. 23–25…”