Design, Fabrication and Optical Characterization of Photonic Crystal Patterned Ultra-Thin Silicon

Almenabawy, Sara M.; Zhang, Yibo; Prinja, Rajiv; Sharma, Geetu; Kherani, Nazir P.

doi:10.1109/pvsc45281.2020.9300368

Cited by 1 publication

(1 citation statement)

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“…It is worth mentioning that some authors treat inverted pyramid structures as a type of texture [71,88], while others treat them as PCs [89][90][91], calling them surface PCs [91]. If the lattice spacing is comparable to the desired wavelength, light trapping should be enhanced by robust wave interference in the photonic structure [89] and resonant effects [91]. However, according to Razzaq et al [92], the influence on the efficiency of random pyramid texturing is comparable with a periodic inverted nanopyramid structure.…”

Section: Anti-reflective and Light-trapping Surfacementioning

confidence: 99%

Photonic Crystal Structures for Photovoltaic Applications

Starczewska,

Kępińska

2024

Materials

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Photonic crystals are artificial structures with a spatial periodicity of dielectric permittivity on the wavelength scale. This feature results in a spectral region over which no light can propagate within such a material, known as the photonic band gap (PBG). It leads to a unique interaction between light and matter. A photonic crystal can redirect, concentrate, or even trap incident light. Different materials (dielectrics, semiconductors, metals, polymers, etc.) and 1D, 2D, and 3D architectures (layers, inverse opal, woodpile, etc.) of photonic crystals enable great flexibility in designing the optical response of the material. This opens an extensive range of applications, including photovoltaics. Photonic crystals can be used as anti-reflective and light-trapping surfaces, back reflectors, spectrum splitters, absorption enhancers, radiation coolers, or electron transport layers. This paper presents an overview of the developments and trends in designing photonic structures for different photovoltaic applications.

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