Open AccessMorphological features and optical properties of nanosized ZrO2 films prepared by sol-gel spin coating
Author(s) -
O. Dimitrov,
I. Stambolova,
Stanislav V. Vassilev,
Katerina Lazarova,
Tsvetanka Babeva
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1492/1/012024
Subject(s) - crystallite , materials science , spin coating , monoclinic crystal system , polyethylene glycol , photoluminescence , tetragonal crystal system , coating , microstructure , thin film , chemical engineering , peg ratio , analytical chemistry (journal) , phase (matter) , crystallography , composite material , nanotechnology , crystal structure , optoelectronics , chemistry , organic chemistry , metallurgy , finance , economics , engineering
Homogeneous thin ZrO 2 films were prepared by spin coating. The X-ray diffraction (XRD) analysis revealed the presence of a mixture of monoclinic and tetragonal ZrO 2 polycrystalline phases with nanosized crystallites. The samples were smooth and crack-free with a ganglia-like microstructure and had transmittance of about 80% in the UV-visible range. We established that adding polyethylene glycol (PEG) to the precursor affects the phase composition, morphology and optical properties of the films. The photoluminescence (PL) spectra of the samples revealed a broad violet emission. Some of the PEG-modified films exhibited about twice as intense PL emission as the non-modified films. Their emission bands were more complex, consisting of several additional peaks after deconvolution.