Synthesis and analysis of an indium tin oxide nanoparticle dispersion

Gilstrap, Richard A.; Summers, Christopher J.

doi:10.1016/j.tsf.2009.06.065

Cited by 19 publications

(11 citation statements)

References 24 publications

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“…All of dispersions have over 98% transmittance in the visible range and show reflections in the infrared range that are explained by free-electron vibrations. 48 The blue shift of the bandgap resulting from increasing tin concentration can be explained by the BursteinÀMoss effect. 48 In Figure 3f, the UVÀvis transmittance spectra (Figure 3e) are replotted as absorption versus energy so that the optical ARTICLE band edges can be estimated and the BursteinÀMoss shifts can be determined.…”

Section: Articlementioning

confidence: 99%

“…48 The blue shift of the bandgap resulting from increasing tin concentration can be explained by the BursteinÀMoss effect. 48 In Figure 3f, the UVÀvis transmittance spectra (Figure 3e) are replotted as absorption versus energy so that the optical ARTICLE band edges can be estimated and the BursteinÀMoss shifts can be determined. Compared to that of nondoped In 2 O 3 nanocrystals, BursteinÀMoss shifts of 0.13 eV (5% Sn) and 0.19 eV (10% Sn) were observed, corresponding to 2.2 Â 10 19 cm À3 and 3.9 Â 10 19 cm À3 of free-electron concentrations.…”

Section: Articlementioning

confidence: 99%

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Synthesis of Ligand-Stabilized Metal Oxide Nanocrystals and Epitaxial Core/Shell Nanocrystalsviaa Lower-Temperature Esterification Process

Ito¹,

Yokoyama²,

Zaikova³

et al. 2014

ACS Nano

166

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The properties of metal oxide nanocrystals can be tuned by incorporating mixtures of matrix metal elements, adding metal ion dopants, or constructing core/shell structures. However, high-temperature conditions required to synthesize these nanocrystals make it difficult to achieve the desired compositions, doping levels, and structural control. We present a lower temperature synthesis of ligand-stabilized metal oxide nanocrystals that produces crystalline, monodisperse nanocrystals at temperatures well below the thermal decomposition point of the precursors. Slow injection (0.2 mL/min) of an oleic acid solution of the metal oleate complex into an oleyl alcohol solvent at 230 °C results in a rapid esterification reaction and the production of metal oxide nanocrystals. The approach produces high yields of crystalline, monodisperse metal oxide nanoparticles containing manganese, iron, cobalt, zinc, and indium within 20 min. Synthesis of tin-doped indium oxide (ITO) can be accomplished with good control of the tin doping levels. Finally, the method makes it possible to perform epitaxial growth of shells onto nanocrystal cores to produce core/shell nanocrystals.

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Section: Articlementioning

confidence: 99%

Section: Articlementioning

confidence: 99%

Synthesis of Ligand-Stabilized Metal Oxide Nanocrystals and Epitaxial Core/Shell Nanocrystalsviaa Lower-Temperature Esterification Process

Ito¹,

Yokoyama²,

Zaikova³

et al. 2014

ACS Nano

166

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show abstract

“…10,11 Thus, it has a wide variety of applications, including flat panel displays, functional glass, and solar cells. 12 Several synthesis and processing methods for making ITO nanostructures have been reported. One of the approaches is based on thin-film deposition; another uses solution-based synthesis.…”

Section: CLmentioning

confidence: 99%

Fabrication and properties of nano indium tin oxide/wool keratin composites

Wen

et al. 2013

J of Applied Polymer Sci

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A functional keratin/indium tin oxide (ITO) composite was prepared by a route involving an ionic liquid dissolving process and a wet-chemical codeposition technique. The crystal structure and morphology of ITO were investigated by X-ray diffraction and transmission electron microscopy, respectively. The factors influencing the crystal structure and the size of the ITO were investigated in detail. The optimal In/Sn ratio, reaction temperature, and pH value were found to be 10:1, 70 C, and 7, respectively. The sheet resistance of the composite reached 0.39 kX/ w . In addition, the composite films possessed a perfect UV protection ability with a UV protection factor of up to 43.78.

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“…Preparation methods of In 2 O 3 or ITO NPs have been reported based on the combination of coprecipitation of metal precursors and successive thermal treatment (Song et al, 2005) (Kim and Park, 2004), laser-induced fragmentation (Usui et al, 2006), solvothermal synthesis (Lee et al, 2005) (Yang et al, 2008a)), microwave-assisted synthesis (Okuya et al, 2007), emulsion techniques (Sujatha Devi et al, 2002), sol-gel synthesis (Aoki et al, 2006), and one-pot preparation of colloids (Seo et al, 2003) (Liu et al, 2005(Lee et al, 2006 (Zhang et al, 2005) (Kanehara et al, 2009) (Gilstrap Jr. et al, 2008) (Gilstrap Jr. and Summers, 2009) However, the precise control of ITO NPs in size, shape, and structure simultaneously has never been reported, in particular, for monodispersed particle synthesis system. Namely, there is the technological difficulty for tin-doped indium oxide in the strict separation of nucleation and growth, and crystallization at rather low temperature below 300 °C.…”

Section: Application To Direct Ito Synthesismentioning

confidence: 99%

Preparation of Monodispersed Nanoparticles of Transparent Conductive Oxides

Muramatsu

Kanie

Sasaki

et al. 2016

KONA

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Generally, indium-tin-oxides (ITO) thin film is prepared by the sputtering process with ITO target, but only 20 % of ITO yielded from the target is deposited on the substrate. Namely, about 80 % ITO is exhausted by the deposition elsewhere far from the substrate. The recycling process of indium is limited so that ca. 20 % ITO of the starting material is lost without any recovery. Even if the recycling of ITO has been carried out in this process, we should prepare ITO target of 5 times more than apparent use of ITO on film. If we change it to printing process from the sputtering, the reduction in ITO use is expected as ca. 50 %, considering the increase in film thickness by printing. Our target technology also includes ITO nanoink for the project. As a result, monodispersed ITO nanoparticles (NPs) with a cubic shape were fabricated by using quaternary ammonium hydroxide-assisted metal hydroxide organogels. These NPs have perfect uniformity in size with beautiful shape, and perfect single crystalline structure including Sn. As we were attempted to make thin film with ITO nanoink, it was successfully fabricated below 200 nm in thickness and the resistivity was drastically decreased below 1.0 × 10-3 Ω cm after heat treatments. GZO nanoink as substitute of ITO has also been developed.

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Synthesis and analysis of an indium tin oxide nanoparticle dispersion

Cited by 19 publications

References 24 publications

Synthesis of Ligand-Stabilized Metal Oxide Nanocrystals and Epitaxial Core/Shell Nanocrystalsviaa Lower-Temperature Esterification Process

Synthesis of Ligand-Stabilized Metal Oxide Nanocrystals and Epitaxial Core/Shell Nanocrystalsviaa Lower-Temperature Esterification Process

Fabrication and properties of nano indium tin oxide/wool keratin composites

Preparation of Monodispersed Nanoparticles of Transparent Conductive Oxides

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