Modeling of the synergistic anti-reflection effect in gradient refractive index films integrated with subwavelength structures for photothermal conversion

Abstract

We propose a synergistic anti-reflection system that integrates gradient refractive index films with subwavelength structures, which greatly improves the performance of photothermal materials.

Modeling and admittance recursive simulation of anti-reflective coatings for photothermal conversion: synergy between subwavelength structures and gradient refractive index layers

“…Therefore, we opted to construct a gradient fluorescent glass transmission layer covered with a subwavelength structural coating as the transmission layer model for photothermal conversion, and used the admittance recursion method 31 and effective medium theory 32–34 to determine the shape, structural parameters and transmitted light characteristics of the model. In our previous article, 35,36 we have studied the synergistic anti-reflective coating of photothermal conversion. Based on our previous researches, this paper conducted further research in the following aspects: ① In the subwavelength structure layer, SnO 2 was doped into SiO 2 to reduce the interlayer Fresnel reflection.…”