CHEE-WEE LIULu, C.-T.C.-T.LuCHEE-WEE LIU2018-09-102018-09-102015http://www.scopus.com/inward/record.url?eid=2-s2.0-84959190882&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/393215Optical properties of dielectric nano-sized sphere, embedded sphere and hemisphere arrays on SiN coated Si texture wafer were studied using the three dimensional finite-difference time-domain method. These arrays increase the photon currents each with an appropriate radius range. The spheres with a radius of 60 nm shows the strongest enhancement at normal incidence. The spheres can be seen as an additional antireflection coating by effective medium theory, because the sphere radius is smaller than the wavelengths of AM1.5G spectrum. It also shows the properties of omnidirectional antireflection due to the coupling of light through nano-sized spheres into Si with oblique incidence. For the angle of incidence from 0o to 75o, the sphere arrays on SiN coated Si texture shows the lowest averaged weighted reflectance. © 2015 IEEE.Optical reflection; Optical surface waves; Photonics; Photovoltaic cells; Reflectivity; Silicon; Silicon compounds[SDGs]SDG7Antireflection coatings; Finite difference time domain method; Numerical models; Optical properties; Optoelectronic devices; Photoelectrochemical cells; Photonics; Photovoltaic cells; Reflection; Silicon; Silicon compounds; Silicon nitride; Silicon oxides; Silicon wafers; Solar cells; Spheres; Surface waves; Time domain analysis; Angle of Incidence; Crystalline silicon solar cells; Effective medium theories; Normal incidence; Oblique incidence; Optical reflection; Optical surface waves; Three dimensional finite difference time domain methods; Silicon solar cellsconference paper10.1109/NUSOD.2015.7292864