Influence of Berry dye on some properties of nanocomposite (PVA/TiO2) films

The aim of this paper, nanocomposite (PVA/TiO 2 /Berry dye) films is prepared with a solid state thin layer and the optical and some structural properties were measured. The prepared films showed an increase in absorbance due to the increase in the concentration of Berry dye. Also, due to the dyeing...

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Bibliographic Details
Published in:Optical and quantum electronics 2023-03, Vol.55 (3), Article 254
Main Authors: Mohaimeed, Ameen Alwan, Rabee, Bahaa H.
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Computer Communication Networks
Conduction bands
Dyeing
Dyes
Electrical Engineering
Electrons
Energy gap
Lasers
Morphology
Nanocomposites
Nanoparticles
Optical Devices
Optical microscopy
Optical properties
Optics
Optoelectronics
Photonics
Photovoltaic cells
Physics
Physics and Astronomy
Polyvinyl alcohol
Solar cells
Titanium dioxide
Ultraviolet detectors
Valence band
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Summary:The aim of this paper, nanocomposite (PVA/TiO 2 /Berry dye) films is prepared with a solid state thin layer and the optical and some structural properties were measured. The prepared films showed an increase in absorbance due to the increase in the concentration of Berry dye. Also, due to the dyeing of these films the transmittance (79%) decreased. Energy gap decreased from 3.64 to 3.54 eV because increase in the concentration of Berry dye. The natural Berry dye is make a production of new levels in the band gap, which makes it easier for electrons to pass from the valence band to these local levels in the conduction band. All optical constants (α, n, k, Ɛ r , Ɛ i , and σ opt. ) show increasing with an increase in the concentration of Berry dye. Picture of optical microscopy showed the dispersion of TiO 2 nanoparticles inside Polyvinyl Alcohol (PVA), these particles formed a network to move electrons faster. FE-SEM images the morphology of TiO 2 exhibits the creation of tiny clusters, as well as the morphology of PVA/TiO 2 agglomerates with porous irregular cauliflower-like characteristics, making it useful for various optoelectronics applications such as an photovoltaics, solar cells, light filters, UV detectors.
ISSN:0306-8919
1572-817X
DOI:10.1007/s11082-022-04523-9