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Broadband optical antireflection enhancement by integrating antireflective nanoislands with silicon
Haesung Park1, Dongheok Shin, Gumin Kang
1School of Mechanical Engineering, Yonsei University, Seodaemun-gu, Seoul, Korea.
Abstract:
Based on conventional colloidal nanosphere lithography, we experimentally demonstrate novel graded-index nanostructures for broadband optical antireflection enhancement including the near-ultraviolet (NUV) region by integrating residual polystyrene antireflective (AR) nanoislands coating arrays with silicon nano-conical-frustum arrays. This is a feasible optimized integration method of two major approaches for antireflective surfaces: quarter-wavelength AR coating and biomimetic moth's eye structure.
