Transparent high refractive index materials are of interest as a coating additive for reducing reflection loss in a number of technologically important applications such as coatings for TFT/LCD displays and LED lighting. NYACOL® offers five material types which are relatively high in refractive index and the particle size is small enough that the dispersion is optically transparent.
We developed an arbitrary method for estimating the refractive index and density of the solid phase of our sols. This data is presented below. In formulating the high RI coating, the user will need these parameters to determine the amount of our sol to use to meet a given RI target. The choice of oxide will depend on the chemistry of the coating and the coupling agent options available.
Contact NYACOL® to discuss your requirements in more detail.