Abstract
We propose a polarization selective transparent electrode (PSTE) utilizing a rectangular-shaped metal nano-wire structure. The performance of the PSTE was evaluated with simulation based on finite element method (COMSOL Multiphysics). Parametric studies have been carried out to give a guide for geometric parameter selection to meet the requirement of the target application. According to the studies, 70 nm by 800 nm rectangular metal grid, having a thickness of 100 nm and linewidth of 30 nm were recommended to keep higher than 61% transmittance, 24 dB extinction ratio, and lower than 5 Ω/sq sheet resistance. As an application of PSTE, a design idea about crosstalk reduction of the passive stereoscopic 3D display is proposed by presenting its pixel structure employing the proposed PSTE. The light extraction efficiency of the proposed pixel employing PSTE structure was also evaluated and compared to the structure employing the lossless ITO (Indium Tin Oxide), by measuring extracted light output power from incoherently distributed dipole sources excited in the emission layer. Degradation of the extraction efficiency below 14 percent point was expected compared to the lossless ITO for all the primary color wavelength range.
Highlights
M ETAL wire-grid polarizers is consist of parallel metal wires spaced by a period of less than sub wavelength
In this paper, motivated by the common factor between two devices, the use of metals in the transparent electrode and the metal wire-grid in the polarizer, we propose a device of integrated functionality: polarization selective transparent electrode (PSTE)
The PSTE having dual functions of transparent electrode and polarizer was proposed by adjusting the mesh size of the metal nano-wire transparent electrode
Summary
M ETAL wire-grid polarizers is consist of parallel metal wires spaced by a period of less than sub wavelength. Transparent electrodes based on CNT (carbon nanotubes) [10], [13]–[16], graphene [10], [17]–[21] and metal nanostructure (aligned wires or grid) [10], [13], [14], [22]–[29] or their hybrid structures [17] has been studied as an alternative to ITO Among these alternatives, especially, metal nanostructure can give more functions (such as polarization control) by designing metal pattern while overcoming ITO’s disadvantages mentioned earlier [10], [13].
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