Our results demonstrate that grass-like alumina coatings are efficient and omnidirectional AR coatings for photodiode package windows in a wide wavelength range across the visible spectrum to near-infrared radiation. Furthermore, even at the incidence angle of 50°, the double-sided coating provides higher EQE than bare glass at normal incidence. All native to all versions of LW that has the Instance Generator. Simple lo-poly grass model then Instanced to a ground. We demonstrate that EQE increases at all angles, and up to 15% absolute increases in EQE at a 70° angle of incidence compared to conventional uncoated glass. LightWave 3d: Quick and Easy Lo-Poly Grass. In this work, we show that by adding a simple grass-like alumina antireflection (AR) coating on the window glass, excellent omnidirectional sensitivity and high external quantum efficiency (EQE) of b-Si photodiodes can be retained. This has a notable impact particularly on black silicon (b-Si) photodiodes, which have extreme sensitivity. Packaged photodiodes suffer from Fresnel reflection from the package window glass, especially at high angles of incidence.
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