Functional optical design of thickness-optimized transparent conductive dielectric-metal-dielectric plasmonic structure

Abstract

Dielectric/metal/dielectric plasmonic transparent structures play an important role in tailoring the high-optical performance of various optoelectronic devices. Though these structures are in significant demand in applications, including modification of the optical properties, average visible transmittance (AVT) and colour render index (CRI) and correlated colour temperature (CCT), obtaining optimal ones require precise thickness optimization. The overall objective of this study is the estimation of the optimal design concept of MoO3/Ag/WO3 (10/dAg/dWO3 nm) plasmonic structure. To explore the proper use in optoelectronic devices, we are motivated to conduct a rigorous optical evaluation on the thickness of layers. Having calculated optical characteristics and achieved the highest AVT of 97.3% for dAg = 4 nm and dWO3 = 6 nm by the transfer matrix method, it is quite possible to offer the potential of the structure acting as a transparent contact. Notably, the colour coordinates of the structure are x = 0.3110 and y = 0.3271, namely, it attributes very close to the Planckian locus. This superior colour performance displays that MoO3/Ag/WO3 shall undergo rapid development in neutral-colour windows and LED technologies. Structure with dAg = 6 nm and dWO3 = 16 nm exhibits the highest CRI of 98.58, thus identifying an optimal structure that can be integrated into LED lighting applications and imaging technologies. Besides the colour of structure with dAg = 4 nm and dWO3 = 8 nm is equal for D65 Standard Illuminant, the study reports that the range of CCTs are between 5000 and 6500 K. This optimization makes the structure employable as a near-daylight broadband illuminant. The study emphasizes that optimal MoO3/Ag/WO3 plasmonic structures can be used effectively to boost optoelectronic devices' performance.

Enhancement of color and photovoltaic performance of semi-transparent organic solar cell via fine-tuned 1D photonic crystal

“…For d Ag > 4 nm, the R sh decreases and becomes around 4 Ωsq −1 in d Ag = 6 nm 34 . Therefore, the MoO 3 /Ag/MO 3 (10/6/30 nm) also has very convenient contact properties for electrical performance 15 .…”

“…In addition, developing high-conductivity transparent contact systems to reduce absorption and reflection in visible light without disturbing the selective transport and band arrangement is a critical parameter in designing high-performance ST-OSCs 13 . In OSCs, opaque metal electrodes such as Ag, Au, and Al, generally thick and highly reflective in VR, are used as contact material 1 , 15 – 17 . To achieve the aim of semi-transparency in the ST-OSC design, a thin metal material is sandwiched between two anti-reflective dielectrics as the top contact, and a dielectric/metal/dielectric (DMD) structure is formed 1 , 15 .…”

“…In OSCs, opaque metal electrodes such as Ag, Au, and Al, generally thick and highly reflective in VR, are used as contact material 1 , 15 – 17 . To achieve the aim of semi-transparency in the ST-OSC design, a thin metal material is sandwiched between two anti-reflective dielectrics as the top contact, and a dielectric/metal/dielectric (DMD) structure is formed 1 , 15 . DMD designs offer high transparency and conductivity, low turbidity, excellent flexibility, easy fabrication, and excellent compatibility with different substrates 1 , 15 , 17 .…”

“…To achieve the aim of semi-transparency in the ST-OSC design, a thin metal material is sandwiched between two anti-reflective dielectrics as the top contact, and a dielectric/metal/dielectric (DMD) structure is formed 1 , 15 . DMD designs offer high transparency and conductivity, low turbidity, excellent flexibility, easy fabrication, and excellent compatibility with different substrates 1 , 15 , 17 . Because transparent electrodes have inherently low reflectivity, the photon absorption of the device must be carefully adjusted to allow sufficient light to pass through the device 18 .…”

Theoretical Evaluation of Angle-Dependent Optical Properties of a Thin Film Solar Cell Including One-Dimension Photonic Crystals

“…Optical spectra such as absorption, reflection and transmittance of the CdTe-based SC in which the 4 period MgF2/MoO3 photonic crystals examined in the study were integrated were calculated using the Transfer Matrix Method. TMM is a very effective method that examines the propagation of electromagnetic waves in multilayer material systems and is used to calculate the optical properties of the structure (Nguyen et al, 2012;Li et al, 2014;Wang et al, 2014;Çetinkaya et al, 2022). The application of TMM to the SC structure is achieved by connecting the electric and magnetic field components of the electromagnetic wave to each other with a transfer matrix in each layer.…”