The present disclosure may provide a mixture for use in forming a transparent coating including a silicon alkoxide precursor and an organic polymer. The silicon alkoxide precursor may have a pH level between 1 and 4. The organic polymer may have an average molecular weight between 5,000 and 50,000 Da. The mixture may include 35% to 65% organic polymer by volume. The organic polymer may be removed from the mixture after application leaving a resultant transparent coating, wherein: the resultant coating has a porosity of ≧35% to ≦65%; a thickness in the range from ≧95 nm to ≦135 nm; pores having an average diameter from ≧5 nm to ≦50 nm; and a diameter distribution according to a log-norm distribution with a half-width of ≦10 nm.