Optical properties of metal-cluster-doped ORMOSIL nanocomposites

Tseng, Justine Y.; Li, Chia-Yen; Takada, T.; Lechner, Cornelia; Mackenzie, John D.

doi:10.1117/12.132054

Cited by 30 publications

(14 citation statements)

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“…Tohge et al [ 19] prepared Au microcrystal-doped silica glass films by the sol-gel method using aminopropyltriethoxysilane and HAuC14-4H20 as starting materials. Tseng et al [20] made Au microcrystaldoped Ormosil by heat treating the organic groupcontaining silica gel doped with AuCI 4 ions at a moderate temperature like 200~ [20]. Furthermore, Kozuka et al found that the use of a titanium alkoxide (titanium isopropoxide) led to the highly Au microcrystal-containing transparent Tit2 film.…”

Section: *Present Address: School Of Engineering the University Of Smentioning

confidence: 98%

Preparation of gold microcrystal-doped TiO2, ZrO2 and Al2O3 films through sol-gel process

Matsuoka

Yoshida

Nasu

et al. 1997

J Sol-Gel Sci Technol

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Abstract. Au-microcrystal-doped TiO2, ZrO2 and A1203 films were made by sol-gel dip-coating method using titanium, zirconium and aluminum alkoxides with HAuCI4 9 4H20. The influence of the oxide matrix composition on the maximum amount of the Au microcrystals that can be incorporated in the oxide film was examined. Some amount of Au microcrystals were exhausted to the surface of Au microcrystal-doped oxide films when an excess amount of HAuC14 9 4H20 was dissolved in the coating solution. The maximum amount of Au that can be incorporated in the oxide film was found to increase with the increase of the pH point at zero charge (PZC) of the matrix oxide. This should be due to the fact that AuCl 4 ions are charged negative and also Au microcrystals tend to charge negative, so that the oxide gel with high PZC, which has a tendency to charge positive, may fix the ions and/or microcrystals to its interior. A maximum amount of Au microcrystals as high as 12.6 vol% was attained in an Au:Al203 film.

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Section: *Present Address: School Of Engineering the University Of Smentioning

confidence: 98%

Preparation of gold microcrystal-doped TiO2, ZrO2 and Al2O3 films through sol-gel process

Matsuoka

Yoshida

Nasu

et al. 1997

J Sol-Gel Sci Technol

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“…Such a local pressure and a confined reaction region can be found in gel films prepared through solgel dip-coating methods. 33), 34) The confined reaction region is one of the desired characteristics of the matrix of hologram recording media, since reactions should occur within the area where interfered light is irradiated. It is also worth mentioning here that diffraction peaks related to Cu, such as Cu, …”

Section: Resultsmentioning

confidence: 99%

Reversible change of diffraction efficiency in Cl-containing 3-glycidoxypropyl silsesquioxane films co-doped with Ag and Cu

Kawamura

Ikeda

Ito

et al. 2016

J. Ceram. Soc. Japan

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The reversible change of diffraction efficiency is confirmed in the solgel-derived Cl-containing inorganicorganic hybrid films co-doped with Ag and Cu by interfered blue and green laser irradiations. The change of diffraction efficiency is due to absorbance change, which is caused by a mutual conversion of Ag and AgCl nanoparticles upon the laser irradiations. The role of Cu is clarified that electrons are transferred between Ag and Cu, which is indispensable for the reversibility of the absorbance change. The Ag nanoparticles are observed to be aggregated after several cycles of blue and green laser irradiations. The aggregation would occur because of the migration of Ag element during laser irradiation. The diffraction efficiency of the film reaches 0.75% after interfered blue laser irradiation; then it decreases almost 0% by green laser irradiation. Subsequent interfered blue laser irradiation increases again the diffraction efficiency up to 0.59%. This suggests that our materials can be used as rewritable hologram recording media.

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“…This kind of materials offers some advantages in comparison to pure inorganic sol-gels because of its superior film formability, allowing thick film to be coated onto glass substrate. In addition, the ORMOSIL matrix has good transparency and is less susceptible to cracking than the pure inorganic sol-gel [4]. This matrix enhances the photostability from laser dyes and they have excellent optical and mechanical properties.…”

Section: Introductionmentioning

confidence: 94%

Photostability of laser dyes incorporated in formamide SiO2 ORMOSILs

Valverde-Aguilar

2006

Optical Materials

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Optical properties of metal-cluster-doped ORMOSIL nanocomposites

Cited by 30 publications

References 0 publications

Preparation of gold microcrystal-doped TiO2, ZrO2 and Al2O3 films through sol-gel process

Preparation of gold microcrystal-doped TiO2, ZrO2 and Al2O3 films through sol-gel process

Reversible change of diffraction efficiency in Cl-containing 3-glycidoxypropyl silsesquioxane films co-doped with Ag and Cu

Photostability of laser dyes incorporated in formamide SiO2 ORMOSILs

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