Antireflection coatings for multilayer-type photonic crystals

Design Multilayer Antireflection Coatings for Terrestrial Solar Cells

In order to analyze the influence of methods to design antireflection coatings (ARCs) on reflectivity of broadband solar cells, we provide detailed analyses about the ARC coupled with a window layer and the refractive index dispersion effect of each layer. By multidimensional matrix data simulation, two methods were employed to measure the composite reflection of a SiO2/ZnS double-layer ARC wit...

Resonant cavity based compact efficient antireflection structures for photonic crystals

We propose an effective admittance (EA) method to design antireflection structures for two-dimensional photonic crystals (PCs). We demonstrate that a compact and efficient antireflection structure, which is difficult to obtain by the conventional admittance matching method, can be readily designed by the EA method. The antireflection structure consists of an air slot resonant cavity that is con...

Semianalytical design of antireflection gratings for photonic crystals

Antireflection and Enhanced Absorption in Tapered Silicon Photonic Crystals

Tapered silicon photonic crystals provide a broad and wide-angle antireflective window and strong optical resonances for enhanced absorption for TEand TM-polarized light, respectively, showing the potential for improving the performance of photovoltaic devices. 2010 Optical Society of America OCIS codes: (050.5298) Photonic crystals; (160.4760) Optical properties ; (220.4241) Nanostructure fab...

Witness sample preparation for measuring antireflection coatings.

Measurement of antireflection coating of witness samples from across the worldwide industry has been shown to have excess variability from a sampling taken for the OSA Topical Meeting on Optical Interference Coatings: Measurement Problem. Various sample preparation techniques have been discussed with their limitations, and a preferred technique is recommended with its justification, calibration...