uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Angular dependence of coloured absorber coatings
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics. (Solid state physics)
Hefei University 230022, Hefei, PR. China. (Dept. of Chemical and Materials Engineering,)
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics. (Solid state physics)
2012 (English)In: The International Conference on Optical Thin Films and Coating Technology, 15-18 October 2012, Hangzhou, China: Frontiers of Optical Coatings / [ed] Weidong Shen, 2012Conference paper, Oral presentation only (Refereed)
Abstract [en]

Angular dependence of coloured absorber coatings

Shuxi Zhao1, Dechun Zhu2 and Carl-G.Ribbing1

 

1) Div. of Solid State Physics, Ångström Laboratory, Uppsala University

     Box 534, SE-751 21 Uppsala, Sweden

2) Dept. of Chemical and Materials Engineering, Hefei University

     230022, Hefei, PR. China

 

Abstract

Investigations of angular dependence of thermal solar absorber coatings have been carried out in the Uppsala SSP-division since more than 10 years. In this contribution the angular variation of the optical properties of the recently suggested TiAlN-based coloured absorber is reported.

  The presence of an interference controlled colour raises a concern that strong irradiscence might make the roof integration of such absorbers aesthetically unsuitable. Using colour coordinates calculated from the measured reflectance spectra we reach the conclusion that the attractive colour seen in normal incidence is only marginally changed by the natural change of angle of incidence for a stationary collector.

  A second issue to be considered is whether this new absorber surface performs better or worse than earlier cermet absorbers when the solar incidence angle varies. The reflectance of TiAlN, as well as the antireflected TiAlON, as a function of wavelength and angle of incidence has therefore been measured using an integrating sphere with a rotatable sample holder in the centre. For comparison and calibration such measurements, such measurement was also carried out on a freshly sputtered, opaque gold film. The angular variation was fitted using the Incident Angle Modifier Kta, the ratio of the measured absorptance for incidence angle, to that at normal incidence:

Abstract

Investigations of angular dependence of thermal solar absorber coatings have been carried out in the Uppsala SSP-division since more than 10 years. In this contribution the angular variation of the optical properties of the recently suggested TiAlN-based coloured absorber is reported.

  The presence of an interference controlled colour raises a concern that strong irradiscence might make the roof integration of such absorbers aesthetically unsuitable. Using colour coordinates calculated from the measured reflectance spectra we reach the conclusion that the attractive colour seen in normal incidence is only marginally changed by the natural change of angle of incidence for a stationary collector.

Place, publisher, year, edition, pages
2012.
National Category
Materials Engineering
Research subject
Physics with spec. in Atomic, Molecular and Condensed Matter Physics; Engineering Science with specialization in Solid State Physics
Identifiers
URN: urn:nbn:se:uu:diva-189996OAI: oai:DiVA.org:uu-189996DiVA: diva2:582723
Conference
The International Conference on Optical Thin Films and Coating Technology, 15-18 October 2012, Hangzhou, China
Available from: 2013-01-06 Created: 2013-01-06 Last updated: 2013-01-07

Open Access in DiVA

No full text

Authority records BETA

Zhao, ShuxiRibbing, Carl-Gustaf

Search in DiVA

By author/editor
Zhao, ShuxiRibbing, Carl-Gustaf
By organisation
Solid State Physics
Materials Engineering

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 836 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf