Abstract
Dichroic behaviors of layered ReS2 have been characterized using angular dependent polarizedabsorption and resistivity measurements in the van der Waal plane. The angular dependent optical and electrical measurements are carried out with angles ranging from θ= 0°(E || b) to θ= 90°(E ^b) with respect to the layer crystal’s b-axis. The angular de pendence of polarized energy gaps of ReS2 shows a sinusoidal variation of energies from ~1.341 eV (E ||b to ~1.391 eV (E ^ b). The experimental evidence of polarized energy gap leaves ReS2 apotential usage for fabrication of a polarized optical switch suitable for polarized optical communication in nearinfrared (NIR) region. Angular dependence of resistivities of ReS2 in the vander Waal plane has also been evaluated. The relationship of inplane resistivities shows a sinusoidallike variation from θ= 0°(E ||b) to 90°(E ^ b) and repeated periodically to 360°. The experimental results of optical and electrical measurements indicated that ReS2 is not only an opticaldichroic layer but also an electricaldichroism material presented in the layer plane.
Highlights
Dichroism and optical-anisotropic materials played an important role for the evolution of light-wave optics in past years
The experimental results of optical and electrical measurements indicated that ReS2 is an optical-dichroic layer and an electrical-dichroism material presented in the layer plane
Dichroic semiconductor rhenium disulfide (ReS2) has been synthesized and proposed to possess the potential capability for fabrication of polarization sensitive photodetector applied in multi-channel optical communications [2]
Summary
Dichroism and optical-anisotropic materials played an important role for the evolution of light-wave optics in past years. For generation of polarized light, dichroic crystal or birefringent solid is the most commonly used material because the specific axial anisotropy exists in the crystal structure. Among the dichroic or birefringent solids, the mineral tourmaline such as NaFe3B3Al6Si6O27(OH) or the birefringent crystal such as Calcite (CaCO3) are usually the crucial substances for making linear polarizers [1]. Such kinds of polarizers are usually suitable for making visible-to-ultraviolet lasers or for fabrication of linearly polarized devices. The polarization sensitive behavior of ReS2 is arisen from its specific in-plane optical anisotropy in the layer [2]. ReS2 is an indirect semiconductor with an unpolarized gap of about
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
