Comparision of silica anti-reflective films obtained via a sol-gel process in the presence of PEG or PVP Article

Tian, H, Zhang, L, Xu, Y et al. (2012). Comparision of silica anti-reflective films obtained via a sol-gel process in the presence of PEG or PVP . 28(5), 1197-1205. 10.3866/PKU.WHXB201202231



cited authors

  • Tian, H; Zhang, L; Xu, Y; Wu, D; Wu, ZH; Lü, HB; Yuan, XD

fiu authors

abstract

  • The different effects of poly (ethylene glycol) (PEG) and poly(vinylpyrrolidone) (PVP) on the structure and laser-induced damage threshold (LIDT) of sol-gel silica anti-reflective films were investigated. The results of dynamic light-scattering, transmission electron microscopy (TEM), and small-angle X-ray scattering (SAXS) showed that PEG could prompt silica particles to form uniform clusters, whereas in the PVP-modified sol, the growth of silica particles was restricted. This was a result of the strong hydrogen bonds between Si-OH groups and PVP molecules Multi-fractal spectrum (MFS) analysis suggested that PEG improved the uniformity of the silica film but PVP reduced it, therefore the laser-damage resistance of the PEG-modified silica film was enhanced, but that of the PVP-modified silica film was weakened. 29Si magic-angle spinning nuclear magnetic responance (MAS NMR) showed that PEG improved the condensation of Si -O tetrahedron, but PVP did not. This led to differences between the laser-damage resistances of PEG-modified silica films and PVP-modified silica films. © Editorial office of Acta Physico-Chimica Sinica.

publication date

  • May 7, 2012

Digital Object Identifier (DOI)

start page

  • 1197

end page

  • 1205

volume

  • 28

issue

  • 5