TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Method: The method comprises curing the coating via heating process, and forming a gel on the glass substrate by drying the coating sol formulation coated on the glass substrate prior to annealing the coated glass substrate. The heating step comprises heating the coated glass substrate at a temperature of 580 degrees C for a period of 1 minute. The coating is applied directly on the glass substrate. Preferred Components: The glass substrate is a matte-matte glass, and comprises soda-lime-silica based float glass. The coating step comprises spin coating or dip coating. A visible transmittance is increased by 2.8% as a result of the coating applied on the glass substrate. A thickness of the coating after curing is 120-140 nm. A refractive index of the coating following curing is 1.2-1.3.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The alkyltri-alkoxysilane-based binder in the first sol formulation has a structure of formula (R4-Si-(OR2)((OR1)(OR3))) (I). The first sol formulation further comprises silica based nanoparticles, an alcohol containing solvent, and an acid or base containing catalyst. A mass ratio of the alkyltrialkoxysilane-based binder and the silica based nanoparticles in the first sol formulation is 0.1:1-20:1. The alkyltri-alkoxysilane-based binder comprises 10-80 wt.% of ash. The alkyltri-alkoxysilane-based binder is n-propyltriethoxysilane, n-pentyltriethoxysilane, n-hexyltriethoxysilane and/or cyclohexyltrimethoxysilane (preferred). The silica based nanoparticles in each of the first sol formulation, second sol formulation and coating sol formulation: are spherical, elongated and/or disc-shaped nanoparticles; and have a particle size of 40-50 nm, spherical particles having a particle size of 70-100 nm, spherical particles having a particle size of 10-15 nm, spherical particles having a particle size of 17-23 nm, elongated particles having a diameter of 9-15 nm and/or a length of 40-100 nm. The amount of tetra-alkoxysilane in the second sol formulation and the coating sol formulation is 20 wt.%. Each of the first, second and third sol formulations further includes water, acetic acid and n-propyl alcohol. The coating sol formulation comprises 60-80 wt.% of the second sol formulation and 20-40 wt.% of the first sol formulation. The second sol formulation comprises colloidal silica in solvent, an alcohol containing solvent, and an acid or base containing catalyst. The tetra-alkoxysilane based binder of the second sol formulation comprises tetraethoxysilane. The first sol formulation and the second sol formulation are aged for one day before the blending process. Preferred Method: The blending step comprises providing more of the second sol formulation than the first sol formulation in the coating sol formulation.R1-R3 = 1-20C alkyl, 6-20C aryl or 7-20C aralkyl; andR4 = 1-20C alkyl, 6-20C aryl, 7-20C aralkyl or 1-20C fluoro-modified alkyl.