Authors
Atasi Dan, Arup Biswas, Piyali Sarkar, Sanjay Kashyap, Kamanio Chattopadhyay, Harish C Barshilia, Bikramjit Basu
Publication date
2018/3/31
Journal
Solar Energy Materials and Solar Cells
Volume
176
Pages
157-166
Publisher
North-Holland
Description
In the field of concentrating solar power (CSP) technologies, multilayer absorber coatings are widely being investigated. The spectral properties of selective coatings can be tailored by carefully adjusting the composition and thickness of each layer. Based on the extensive analysis using the transmission electron microscopy (TEM), phase modulated spectroscopic ellipsometry along with computational study, we demonstrate how we can engineer the optical constants (refractive index and extinction coefficient) of individual layer to successfully achieve the spectrally selective properties in W/WAlN/WAlON/Al2O3 –based multilayer absorber coating. This coating exhibits a high absorptance of 0.958 and a low emittance of 0.08. The spectroscopic ellipsometry study confirmed the variation in metallic and optical properties of single layer of WAlN, WAlON and Al2O3 films, deposited on stainless steel substrates. This study …
Scholar articles
A Dan, A Biswas, P Sarkar, S Kashyap… - Solar Energy Materials and Solar Cells, 2018