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  • 1
    Electronic Resource
    Electronic Resource
    Consequence of the Pulling Solution Ageing on the Properties of Tin Oxide Layers Elaborated by the Sol-Gel Dip-Coating Technique (1997)
    Springer
    Journal of sol gel science and technology 10 (1997), S. 185-192 
    Details
    ISSN: 1573-4846
    Keywords: solution ageing ; dip-coating ; tin oxide ; morphology ; physical properties
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract In the sol-gel technology, either for bulk or thin films, the stability in time of the solutions is a major factor to control. An evolution of the solution may influence strongly the properties of the elaborated material (thickness, cracks, refractive index, conductivity, etc.), and cases have been reported where solutions had to be stored in a dry and cold place to prevent any hydrolysis-condensation reaction, and so any consequent gelation. This paper evaluates the influence of the solution aging on the properties of undoped SnO2 layers obtained by sol-gel dip-coating (SGDC). Results are given in relation with storage conditions and for experiences conducted over several months. The evolution of the solution viscosity is first followed, and the corresponding properties for the layers are presented: optical reflection and transmission, optical gap, conductivity, morphology... The importance of the interaction with water is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018355714723
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Influence of Elaboration Parameters on the Properties of Tin Oxide Films Obtained by the Sol-Gel Process (1997)
    Springer
    Journal of sol gel science and technology 10 (1997), S. 55-65 
    Details
    ISSN: 1573-4846
    Keywords: tin oxide ; dip-coating ; elaboration parameters
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The influence of elaboration parameters during the sol-gel process is studied for tin oxide films deposition. The Dip Coating Sol-Gel route can be divided into three elaboration stages: the pulling phase and the drying and densification steps. During the pulling phase, the relative humidity ratio and the withdrawal speed are found to influence the film morphology and the film thickness respectively. Then, we show how a correct control of the sample drying is able to eliminate cracks. The densification step (temperature and duration), leading to the final network, is considered in details, and resulting effects on physical properties are presented: crytallinity, optical behaviour, atomic density, stoichiometry, electrical conductivity etc... We show through these results the specificity of the tin oxide elaborated with our procedure
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018384205766
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Analysis of Antimony Doping in Tin Oxide Thin Films Obtained by the Sol-Gel Method (1997)
    Springer
    Journal of sol gel science and technology 10 (1997), S. 75-81 
    Details
    ISSN: 1573-4846
    Keywords: tin oxide ; antimony ; doping ; XPS ; SIMS ; TEM
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The antimony doping in SnO2 thin films prepared by the sol-gel dip-coating method has been studied using two characterization techniques. In order to determine the actual doping level directly in the deposited layers, X-ray photoelectron spectroscopy (XPS) and secondary ion mass spectrometry (SIMS) have been used. We found that this doping level is systematically lower than expected from the starting solutions composition, and that two oxidation states are present: Sb3+ and Sb5+. As the antimony content increases, there is a competition between Sb5+ and Sb3+ species. The SnO2: Sb thin films have also been observed by transmission electron microscopy (TEM), showing that the measured mean size of crystallites decreases as the Sb content increases in the oxide. No precipitates of either Sn or Sb oxides (other than SnO2) could be detected.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018388306674
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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