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High stability titanium nitride based solar control films
Uppsala universitet.
Uppsala Universitet.
Uppsala Universitet.
1992 (English)In: Thin Solid Films, ISSN 0040-6090, E-ISSN 1879-2731, Vol. 214, no 2, 213-218 p.Article in journal (Refereed) Published
Abstract [en]

Triple-layer structures of TiO2TiN/TiO2 and quadruple layer structures of TiO2Al/TiN/TiO2 have been sputtered on glass substrates at temperatures ranging from room temperature to 300°C. The reflectance and transmittance were measured in the visible and the near-IR wavelength regions. The thin layer of aluminium, in the quadruple layer, oxidizes and forms a dense diffusion barrier. The multilayers exhibit improved optical selectivity which also improves with substrate temperature up to 300°C.

Place, publisher, year, edition, pages
Elsevier, 1992. Vol. 214, no 2, 213-218 p.
National Category
Materials Engineering
Research subject
Militärteknik
Identifiers
URN: urn:nbn:se:fhs:diva-4525DOI: 10.1016/0040-6090(92)90772-4OAI: oai:DiVA.org:fhs-4525DiVA: diva2:708491
Available from: 2014-03-27 Created: 2014-03-27 Last updated: 2017-06-14Bibliographically approved
In thesis
1. Preparation and Characterisation of Sputtered Titanium- and Zirconium Nitride Optical Films
Open this publication in new window or tab >>Preparation and Characterisation of Sputtered Titanium- and Zirconium Nitride Optical Films
1993 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

Multilayered interference coatings based on titanium- and zirconium nitride and designed for solar control have been prepared using reactive d c magnetron sputtering. Preparation effects and degradation mechanisms were investigated. It was shown that the quality of the nitride strongly depends on the degree of crystallinity in the underlying oxide. It has been shown that the nitride layer partly oxidizes as the top oxide layer is deposited. The degradation is enhanced with temperature. A thin sacrificial layer of aluminium deposited between successive depositions of nitride and oxide is shown to improve the optical performance of the coating as preparedm as well as after accelerated ageing tests.

The optical properties of opaque and semitransparent films of zirconium nitride have been studied. A thorough investigation of the influence of composition, deposition rate, substrate temperature and film thickness on the optical response of the film was performed. Both photometric and ellipsometric methods were used to determine thicknesses and the optical constants at wavelengths ranging from 0.23 to 25 μm. The resulting values of n and k, in the wavelength intervals where these independent methods are applicable, have been shown to agree extremely well. The results so far indicate an even larger potential for zirconium nitride based solar control coatings as compared to the titanium nitride based.

Access to optical constants derived from films of zirconium nitride of variable quality made multilayer modelling a powerful tool in the design and analysis of solar control coatings.

Place, publisher, year, edition, pages
Uppsala: Uppsala University, 1993. 31 p.
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:fhs:diva-4530 (URN)
Presentation
, Uppsala
Opponent
Supervisors
Available from: 2014-04-15 Created: 2014-03-27 Last updated: 2017-06-14Bibliographically approved

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