Open AccessSpherically shaped micro-structured antireflective surfaces
Author(s) -
R. Bouffaron,
Ludovic Escoubas,
Vincent Brissonneau,
JeanJacques Simon,
Gérard Berginc,
Ph. Torchio,
F. Flory,
Ph. Masclet
Publication year - 2009
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.021590
Subject(s) - anti reflective coating , optics , materials science , silicon , substrate (aquarium) , radius , optoelectronics , physics , computer science , coating , nanotechnology , oceanography , computer security , geology
An antireflecting micro-structured interface, working in the resonance domain, and made from a bi-periodic array of semi-spherical hollowing-out in a silicon substrate is presented. Its parameters such as sphere radius and position of sphere centers from the surface are optimized numerically. A simple and robust process is described allowing such kind of antireflective surfaces to be fabricated for the infrared range. Spectral and angular reflectance measurement demonstrates the efficiency of the antireflective micro-structured interface which can easily be adapted for the visible range and for photovoltaic applications by a simple homothetic modification of the micro-structure typical dimensions.