Abstract
This paper explored physical properties of LiNbO3 thin films that was deposited on quartz substrate employing spray pyrolysis technique. New raw materials were exploited as the precursor compounds. The films were annealed at different annealing temperatures, i.e. room temperature to 600 °C. The LiNbO3 are characterized and analyzed by the FESEM, AFM, X-ray diffraction and analyzed by UV–Visible and photoluminescence. The optical properties were analyzed by ultra violet- visible (UV–Visible) and photoluminescence measurements. The results indicated that the orientation of films crystallization and the grain size decreased with the increment of annealed temperatures. Energy band gap was recorded approximately 3.9 eV. The transmission efficiency was found to be in the range of 43–78%. Refractive index was observed from 2.02 to 2.43. Optical conductivity increased from 1.8 × 104 to 2.4 × 104 (s−1). The real and imaginary components of dielectric constants (er, ei), and Urbach energy decreased with higher annealing temperature.
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