Zhang Wenfei et al. modified nano zinc oxide with N-(trimethoxysilylpropyl)-4-azido-2,3,5,6-tetrafluorobenzamide and grafted it onto the organosilicon polymer chain. The grafting reaction changed the refractive index of the nanocomposite and made the refractive index of ZnO nanoparticles and the organosilicon matrix more compatible, thus improving the refractive index of the organosilicon polymer, which has great prospects for application in LED packaging materials. Zhan Xibing et al. prepared a series of transparent titanium hybrid silicone resins using non-hydrolyzed sol-gel. The refractive index of the resin was as high as 1.62, and the obtained products had good light transmittance and thermal stability.