Optical properties of poly(di-n-hexylsilane)–zirconia hybrid thin films: suppression of thermochromism and large thermo-optic coefficients

Marusaki, Masahiro; Naito, Hiroyoshi; Matsuura, Yukihito; Matsukawa, Kimihiro
May 2005
Applied Physics Letters;5/9/2005, Vol. 86 Issue 19, p191907
Academic Journal
Optical properties of hybrid thin films, poly(di-n-hexylsilane) (PDHS) dispersed in a zirconia matrix prepared by a sol–gel method, have been studied by means of optical absorption, photoluminescence and ellipsometry measurements. It is found that thermochromism of PDHS is suppressed in the PDHS–zirconia hybrid thin films, and that the refractive index of the hybrid, n, is continuously decreased with increasing temperature, T. The thermo-optic (TO) coefficient of the hybrids, dn/dT, is found to be -4×10-4 °C-1 and thus such a high value of dn/dT enables us to apply the hybrids to optical devices such as TO switches and optical deflectors.


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