Journal
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
Volume 39, Issue -, Pages 84-89Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.mssp.2015.04.049
Keywords
Nickel oxide; Heat mirror; Spectrally selective; Energy saving
Categories
Funding
- Physics Department of King Fahd University of Petroleum and Minerals
- Research Institute of King Fahd University of Petroleum and Minerals
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Energy-efficient coatings based on transparent heat mirrors are reported. These coatings are spectrally selective in that they transmit light and reflect heat in the form of infrared radiation, and thus save energy in buildings. In this work, these coatings were achieved by depositing a two-layer structure consisting of nickel oxide deposited on silver by thermal evaporation. First, the structural, chemical, and optical properties of nickel oxide thin films, that are relevant to their use in transparent heat mirrors, were investigated. This was achieved through x-ray diffraction, atomic force microscopy, x-ray photoelectron spectroscopy, and spectrophotometric characterization. Then, the optical properties of the two-layer structure were determined. Their performance was evaluated through integrated spectral quantities over the solar and visible ranges. Moreover, chemical depth profiling was carried out to investigate the spatial distribution of the elements among the layers. The deposited heat mirrors were found to exhibit the desired behavior of high visible transparency and high infrared reflection. (C) 2015 Elsevier Ltd. All rights reserved.
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