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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/3274

Title: Synthesis and optical characterization of C-SiO2 and C-NiO sol-gel composite films for use as selective solar absorbers
Authors: Makiwa, G
Katumba, G
Olumekor, L
Keywords: Spectrally selective solar absorbers
Solar absorbers
Thermal emittance
Composite films
Carbon-nickel oxide
C-NiO sol-gel
Carbon-silica
C-SiO2
Issue Date: Aug-2008
Publisher: Proceedings of SPIE the International Society for Optical Engineering
Citation: Makiwa, G, Katumba, G, and Olumekor, L. 2008. Synthesis and optical characterization of C-SiO2 and C-NiO sol-gel composite films for use as selective solar absorbers. Optical Modeling and Measurements for Solar Energy Systems 2, San Diego, CA, USA, 13 August 2008, pp 8
Abstract: The authors present a cheaper and environmentally friendly method to fabricate efficient spectrally selective solar absorber materials. The sol-gel technique was used to fabricate carbon-silica (C-SiO2) and carbon-nickel oxide (C-NiO) composite films on aluminium substrates. UV-Vis and FTIR spectrophotometers were used to determine the solar absorptance and thermal emittance of the coatings. C-NiO coatings gave the best spectral characteristics. The authors then show that it is possible to achieve a solar absorptance of 0.94 and a thermal emittance of 0.12. So far, to our knowledge, no commercial spectral solar absorber has these spectral responses
Description: Published in the Proceedings of SPIE the International Society for Optical Engineering
URI: http://hdl.handle.net/10204/3274
ISBN: 0277-786X
Appears in Collections:General science, engineering & technology

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