Microstructure, Optical, and Electrical Properties of Barium Titanate (BaTiO3) and Ba1−xNdxTiO3 Thin Films Deposited by Chemical Solution Deposition (CSD) Method
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Barium titanate (BaTiO3) and Ba1−xNdxTiO3 thin films used by chemical solution deposition method and prepared with spin-coating technique. The thin films of BaTiO3 and Ba1−xNdxTiO3 were grown on a quartz and silicon (Si) substrate. The research aim is to get the best of mole variation of Nd doping to ferroelectric material properties. Doping Nd was varied at 5, 10% in BaTiO3. The thin films were annealed at 850 °C with one hour holding time. The crystal structure, optical and electrical properties of BaTiO3 and Ba1−xNdxTiO3 have been investigated. The microstructure of BaTiO3 and Ba1−xNdxTiO3 were analyzed using XRD equipment, which showed that BaTiO3 and Ba1−xNdxTiO3 crystal had a perovskite shape. The addition mole dopant (x) neodymium (Nd3+), the diffraction angle of the XRD results were seen shifting to the right. As the mole dopant (x) Nd increased, so crystallinity from the Ba1−xNdxTiO3 thin films decreased. The crystallite size of BaTiO3, Ba0.95Nd0.05TiO3, and Ba0.9Nd0.1TiO3 were 70; 21; 28 nm. The addition mole dopant (x) Nd3+ resulted in smaller grain sizes but it did not significantly affect thickness. The greater the addition mole dopant (x) Nd, the smaller the band-gap produced. The results of the IV characterization showed that the Ba1−xNdxTiO3 thin films had a response to light and photovoltaic effects.
KeywordsBaTiO3 Neodymium Microstructure Optical properties CSD
The authors wish to thank Kementrian Riset, Teknologi and Pendidikan Tinggi for financial support through Penelitian Dasar 2019 No 719/UN27.21/PP/2019.
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