Fabrication of praseodymium-doped ceria (PDC) films by slurry spin-coating technique and its structural, morphological and optical properties
The current study is on the fabrication of PDC films prepared by slurry spin-coating technique for photoluminescence activity. At lower spin rates (1000 rpm), thicker and uniform PDC films were obtained. The structural evolution of the sintered PDC films on a dense alumina substrate was studied usin...
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Elsevier
2023-08-01
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| Series: | Applied Surface Science Advances |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S266652392300048X |
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| author | Mohite Manthan Ravindra Rahulkumar Shirasangi Hari Prasad Dasari M.B. Saidutta |
| author_facet | Mohite Manthan Ravindra Rahulkumar Shirasangi Hari Prasad Dasari M.B. Saidutta |
| author_sort | Mohite Manthan Ravindra |
| collection | DOAJ |
| description | The current study is on the fabrication of PDC films prepared by slurry spin-coating technique for photoluminescence activity. At lower spin rates (1000 rpm), thicker and uniform PDC films were obtained. The structural evolution of the sintered PDC films on a dense alumina substrate was studied using Grazing Incidence X-ray diffraction (GIXRD) and Raman Spectroscopy. Crystallite size, microstrain, and dislocation density values remain almost the same with the increase in the coating cycles. The A568/A463 ratio for 3, 5, and 10 coating cycles are 0.52, 0.49, and 0.61, respectively. Surface roughness studies of PDC films using a 3D Noncontact Profilometer. The mean surface roughness values are 12.55, 13.74, and 22.25 μm for the 3rd,5th, and 10th coating cycles, respectively. Microstructure observation by Field Emission Scanning Electron Microscope (FE-SEM). The average thickness of the films for the 3rd, 5th, and 10th coating cycles are 50.93, 41.64, and 109.95 μm, respectively. The PDC films obtained on a dense alumina substrate were porous. FE-SEM micrographs showed a particle aggregation of several irregular and smaller grains, indicating the sintering activity of PDC films. Optical properties were studied using ultraviolet-visible (UV–Vis) absorption spectra and photoluminescence spectra (PLS). The band gap values slightly increased with the increase in the coating cycles. A decrease in PL intensity with an increase in the coating cycle is related to higher oxygen vacancy concentration. PDC films fabricated by the slurry spin-coating technique can be successfully used for optoelectronic applications. |
| first_indexed | 2024-03-12T17:51:31Z |
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| id | doaj.art-62803757988d4ee1bab261f5c337a74d |
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| language | English |
| last_indexed | 2024-03-12T17:51:31Z |
| publishDate | 2023-08-01 |
| publisher | Elsevier |
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| series | Applied Surface Science Advances |
| spelling | doaj.art-62803757988d4ee1bab261f5c337a74d2023-08-03T04:23:38ZengElsevierApplied Surface Science Advances2666-52392023-08-0116100413Fabrication of praseodymium-doped ceria (PDC) films by slurry spin-coating technique and its structural, morphological and optical propertiesMohite Manthan Ravindra0Rahulkumar Shirasangi1Hari Prasad Dasari2M.B. Saidutta3Energy & Catalysis Materials Laboratory, Chemical Engineering Department, National Institute of Technology Karnataka, Surathkal, Mangalore 575025, IndiaEnergy & Catalysis Materials Laboratory, Chemical Engineering Department, National Institute of Technology Karnataka, Surathkal, Mangalore 575025, IndiaCorresponding author.; Energy & Catalysis Materials Laboratory, Chemical Engineering Department, National Institute of Technology Karnataka, Surathkal, Mangalore 575025, IndiaEnergy & Catalysis Materials Laboratory, Chemical Engineering Department, National Institute of Technology Karnataka, Surathkal, Mangalore 575025, IndiaThe current study is on the fabrication of PDC films prepared by slurry spin-coating technique for photoluminescence activity. At lower spin rates (1000 rpm), thicker and uniform PDC films were obtained. The structural evolution of the sintered PDC films on a dense alumina substrate was studied using Grazing Incidence X-ray diffraction (GIXRD) and Raman Spectroscopy. Crystallite size, microstrain, and dislocation density values remain almost the same with the increase in the coating cycles. The A568/A463 ratio for 3, 5, and 10 coating cycles are 0.52, 0.49, and 0.61, respectively. Surface roughness studies of PDC films using a 3D Noncontact Profilometer. The mean surface roughness values are 12.55, 13.74, and 22.25 μm for the 3rd,5th, and 10th coating cycles, respectively. Microstructure observation by Field Emission Scanning Electron Microscope (FE-SEM). The average thickness of the films for the 3rd, 5th, and 10th coating cycles are 50.93, 41.64, and 109.95 μm, respectively. The PDC films obtained on a dense alumina substrate were porous. FE-SEM micrographs showed a particle aggregation of several irregular and smaller grains, indicating the sintering activity of PDC films. Optical properties were studied using ultraviolet-visible (UV–Vis) absorption spectra and photoluminescence spectra (PLS). The band gap values slightly increased with the increase in the coating cycles. A decrease in PL intensity with an increase in the coating cycle is related to higher oxygen vacancy concentration. PDC films fabricated by the slurry spin-coating technique can be successfully used for optoelectronic applications.http://www.sciencedirect.com/science/article/pii/S266652392300048XPraseodymium-doped ceria (PDC)Slurry spin-coating techniquePorous filmsPhotoluminescence activity |
| spellingShingle | Mohite Manthan Ravindra Rahulkumar Shirasangi Hari Prasad Dasari M.B. Saidutta Fabrication of praseodymium-doped ceria (PDC) films by slurry spin-coating technique and its structural, morphological and optical properties Applied Surface Science Advances Praseodymium-doped ceria (PDC) Slurry spin-coating technique Porous films Photoluminescence activity |
| title | Fabrication of praseodymium-doped ceria (PDC) films by slurry spin-coating technique and its structural, morphological and optical properties |
| title_full | Fabrication of praseodymium-doped ceria (PDC) films by slurry spin-coating technique and its structural, morphological and optical properties |
| title_fullStr | Fabrication of praseodymium-doped ceria (PDC) films by slurry spin-coating technique and its structural, morphological and optical properties |
| title_full_unstemmed | Fabrication of praseodymium-doped ceria (PDC) films by slurry spin-coating technique and its structural, morphological and optical properties |
| title_short | Fabrication of praseodymium-doped ceria (PDC) films by slurry spin-coating technique and its structural, morphological and optical properties |
| title_sort | fabrication of praseodymium doped ceria pdc films by slurry spin coating technique and its structural morphological and optical properties |
| topic | Praseodymium-doped ceria (PDC) Slurry spin-coating technique Porous films Photoluminescence activity |
| url | http://www.sciencedirect.com/science/article/pii/S266652392300048X |
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