NDLI: Optical and morphological investigation of aluminium and nickel oxide composite films deposited by spray pyrolysis method as a basis of solar thermal absorber

Content Provider	Springer Nature Link
Author	KHATIBANI, A BAGHERI ROZATI, S M
Copyright Year	2015
Abstract	Applications of alumina and nickel oxide in various fields specially in solar energy conversion technology encouraged us to study physical properties of such materials. Hence after the deposition of the thin films on glass substrate by spray pyrolysis, using X-ray diffraction (XRD), scanning electron microscopy (SEM), and UV–visible spectrophotometry, various physical properties were investigated. Different optical quantities such as optical band gap, refractive index, extinction coefficient, dielectric constants, volume and surface energy loss functions and optical conductivity were determined. Within this paper for different nickel to aluminium ratio (from 20/80 to 80/20 ratio) at specific substrate temperatures (300°C), decrease of optical transmittance with nickel content was notable. Using the transmittance data, other optical quantities were achieved by a numerical approximation method. We also observed an increase in the volume energy loss (VELF) more than the surface energy loss (SELF) and simultaneously a decrease trend prevailed according to nickel amount. On the basic of the XRD results, the amorphous phase changed by the presence of more nickel and according to SEM, more obvious nanosized spherical grains at higher nickel ratios can be observed.
Starting Page	319
Ending Page	326
Page Count	8
File Format	PDF
ISSN	02504707
Journal	Bulletin of Materials Science
Volume Number	38
Issue Number	2
e-ISSN	09737669
Language	English
Publisher	Indian Academy of Sciences
Publisher Date	2015-04-12
Publisher Institution	Indian Academy of Sciences
Publisher Place	Bangalore, India
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Optical properties surface properties composite materials Urbach energy electron microscopy. Materials Science Engineering
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Materials Science

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