Pt–Al2O3 nanocoatings for high temperature concentrated solar thermal power applications
- 1. NANOAFNET, MRD- iThemba LABS, National Research Foundation,1 Old Faure road, Somerset West (South Africa) and Department of Physics, University of Western Cape, Private Bag X 17, Belleville (South Africa) and African Laser Centre, CSIR campus, P.O. Box 395, Pretoria (South Africa)
- 2. Department of Physics, University of Western Cape, Private Bag X 17, Belleville (South Africa)
- 3. NANOAFNET, MRD- iThemba LABS, National Research Foundation,1 Old Faure road, Somerset West (South Africa)
- 4. African Laser Centre, CSIR campus, P.O. Box 395, Pretoria (South Africa)
Description
Nano-phased structures based on metal–dielectric composites, also called cermets (ceramic–metal), are considered among the most effective spectral selective solar absorbers. For high temperature applications (stable up to 650 °C) noble metal nanoparticles and refractory oxide host matrices are ideal as per their high temperature chemical inertness and stability: Pt/Al2O3 cermet nano-composites are a representative family. This contribution reports on the optical properties of Pt/Al2O3 cermet nano-composites deposited in a multilayered tandem structure. The radio-frequency sputtering optimized Pt/Al2O3 solar absorbers consist of stainless steel substrate/ Mo coating layer/ Pt–Al2O3/ protective Al2O3 layer and stainless steel substrate/ Mo coating layer /Pt–Al2O3 for different composition and thickness of the Pt–Al2O3 cermet coatings. The microstructure, morphology, theoretical modeling and optical properties of the coatings were analyzed by the x-ray diffraction, atomic force, microscopy, effective medium approximation and UV–vis specular and diffuse reflectance.
Availability note (English)
Available from http://dx.doi.org/10.1016/j.physb.2011.09.104Additional details
Identifiers
- DOI
- 10.1016/j.physb.2011.09.104;
- PII
- S0921-4526(11)00995-1;
Publishing Information
- Journal Title
- Physica. B, Condensed Matter
- Journal Volume
- 407
- Journal Issue
- 10
- Journal Page Range
- p. 1634-1637
- ISSN
- 0921-4526
- CODEN
- PHYBE3
Conference
- Title
- 4. South African conference on photonic materials
- Acronym
- SACPM 2011
- Dates
- 2-6 May 2011
- Place
- Kariega Game Reserve (South Africa)
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 43086404
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ALUMINIUM OXIDES; APPROXIMATIONS; ATOMIC FORCE MICROSCOPY; CERAMICS; COATINGS; DIELECTRIC MATERIALS; LAYERS; MICROSTRUCTURE; NANOSTRUCTURES; OPTICAL PROPERTIES; PLATINUM; SIMULATION; SOLAR ABSORBERS; SPUTTERING; STABILITY; STAINLESS STEELS; SUBSTRATES; THICKNESS; X-RAY DIFFRACTION
- Descriptors DEC
- ALLOYS; ALUMINIUM COMPOUNDS; CALCULATION METHODS; CARBON ADDITIONS; CHALCOGENIDES; COHERENT SCATTERING; DIFFRACTION; DIMENSIONS; ELEMENTS; EQUIPMENT; HIGH ALLOY STEELS; IRON ALLOYS; IRON BASE ALLOYS; MATERIALS; METALS; MICROSCOPY; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; PLATINUM METALS; SCATTERING; SOLAR EQUIPMENT; STEELS; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENTS
Optional Information
- Copyright
- Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.