TY - JOUR
T1 - Controlling factors for the conversion of trifluoroacetate sols into thin metal fluoride coatings
AU - Fujihara, Shinobu
AU - Tada, Munehiro
AU - Kimura, Toshio
N1 - Funding Information:
This work was supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Science, and Culture of Japan (No. 09750757).
PY - 2000/12
Y1 - 2000/12
N2 - Metal fluoride films were prepared from trifluoroacetate sols by a spin-coating method. Effects of preparation conditions on the deposition of fluoride films have been examined in order to control the thickness and the refractive index of the films. It was suggested that the fluoride was formed by the thermal decomposition of the trifluoroacetate sols generating gaseous phases such as (CF3CO)2O, CO and CO2. This reaction mechanism seemed to largely effect the deposition of the fluoride films in terms of the formation of pores. Characteristics of the fluoride films could be changed by varying the heat treatment. The refractive index of the MgF2 films decreased with increasing heating temperature, which might result from the increased porosity of the films. Drying the film before the heat treatments was effective in the control of the refractive index.
AB - Metal fluoride films were prepared from trifluoroacetate sols by a spin-coating method. Effects of preparation conditions on the deposition of fluoride films have been examined in order to control the thickness and the refractive index of the films. It was suggested that the fluoride was formed by the thermal decomposition of the trifluoroacetate sols generating gaseous phases such as (CF3CO)2O, CO and CO2. This reaction mechanism seemed to largely effect the deposition of the fluoride films in terms of the formation of pores. Characteristics of the fluoride films could be changed by varying the heat treatment. The refractive index of the MgF2 films decreased with increasing heating temperature, which might result from the increased porosity of the films. Drying the film before the heat treatments was effective in the control of the refractive index.
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U2 - 10.1023/A:1008729531254
DO - 10.1023/A:1008729531254
M3 - Conference article
AN - SCOPUS:0034476526
SN - 0928-0707
VL - 19
SP - 311
EP - 314
JO - Journal of Sol-Gel Science and Technology
JF - Journal of Sol-Gel Science and Technology
IS - 1-3
T2 - 10th International Workshop pn Glass and Ceramics, Hybrids and Nanocomposites from Gels
Y2 - 20 September 1999 through 24 September 1999
ER -