NOVELTY - An anti-reflection coating, has an average total reflectance of less than 10% over a spectrum of wavelengths of 400-1100 nm and a range of angles of incidence of 0-90 degrees with respect to a surface normal of the anti-reflection coating, or has a total reflectance of less than 10% over an entire spectrum of wavelengths of 400-1600 nm and an entire range of angles of incidence of 0-70 degrees with respect to a surface normal of the anti-reflection coating.    USE - In solar cell (claimed); for various applications (such as anti-reflection coating of solar cells, light-emitting diodes, image sensors, photo detectors and any other optical components and devices where interfacial Fresnel reflections are undesirable).    ADVANTAGE - The anti-reflection coating reduces reflective losses at interfaces, therefore it has an efficient application on a solar cell. The anti-reflection coating eliminates Fresnel reflection at the surface of a solar cell over the entire solar spectrum; comprises a seven-layer graded-index coating with total reflectance of 1-6%; can be used to increase solar-to-electric efficiency by 20-42%. A graded-index coating where the differential reflectance as each layer surface is minimized by growing a discrete set of layered nanostructures (e.g. TiO2 and/or SiO2 slanted rods) to approximate the continuous index profile. The anti-reflection coatings are widely used to suppress undesired interfacial Fresnel reflections in optical components and devices. The anti-reflection coating is a type of coating applied to the surface of a material to reduce light reflection and to increase light transmission; and can improve solar collection efficiency and, therefore, the overall solar-to-electricity efficiency. The multi-layer nanostructure anti-reflection coating that can be engineered to significantly reduce optical reflection over all wavelengths of sun light and incident angles. This graded-index approach offers a mechanism for minimizing Fresnel reflection fundamentally different from either the traditional lambda /4 anti- reflection coating or the modified surface structures. The coating improves the solar-to-electrical conversion efficiency by 22.2% compared to a conventional system using a conventional single-layer lambda /4.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) a solar cell, comprising: a first electrode located over a substrate; at least one photovoltaic layer located over the first electrode; a second electrode located over the at least one photovoltaic layer; and the anti-refection coating located over the second electrode; and    (2) making an anti-reflection coating, involving: depositing at least one titanium oxide layer; depositing at least one co-sputtered layer of titanium oxide and silicon oxide over the at least one titanium oxide layer; and depositing at least one slanted nanorod layer over the at least one co-sputtered layer titanium oxide and silicon oxide.