High intensity orange-red emission of chemically deposited Sm3+-doped ZrO2 thin films - Beneficial effects of host and dopant
Samarium doped (0.5–5 at.%) ZrO2 films with high surface and optical quality were obtained by sol–gel method using inorganic zirconium precursor. The morphology and roughness of the samples were investigated by scanning electron microscopy (SEM) and atomic force microscopy (AFM). A phase transition...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-05-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785422005130 |
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| author | O. Dimitrov I. Stambolova T. Babeva K. Lazarova G. Avdeev M. Shipochka R. Mladenova S. Simeonova |
| author_facet | O. Dimitrov I. Stambolova T. Babeva K. Lazarova G. Avdeev M. Shipochka R. Mladenova S. Simeonova |
| author_sort | O. Dimitrov |
| collection | DOAJ |
| description | Samarium doped (0.5–5 at.%) ZrO2 films with high surface and optical quality were obtained by sol–gel method using inorganic zirconium precursor. The morphology and roughness of the samples were investigated by scanning electron microscopy (SEM) and atomic force microscopy (AFM). A phase transition following the doping with Sm3+ ions was registered by the X-ray diffraction (XRD) method, leading to stabilization of the tetragonal ZrO2 phase. Optical parameters such as refractive index and extinction coefficient were determined for each sample. X-ray photoelectron spectroscopy (XPS) revealed the presence of carbon impurities as well as a shift of the valence band (VB) edge to lower binding energies with the increase of the dopant level. The electron paramagnetic resonance (EPR) proved the presence of oxygen vacancies and other defects (Zr3+, T-centers) in the structure of the films which prompted photoluminescence (PL) in the material. The emission spectra of the pure ZrO2 and Sm-doped samples revealed the beneficial effect of the host matrix, capable of boosting the characteristic orange-red emission of the Sm3+ ions. The obtained films have very high ratio of acceptor/donor emission intensity (Ia/Id = 25) making them promising candidates for applications in the field of photonics, including in the development of white LEDs. |
| first_indexed | 2024-12-12T21:43:40Z |
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| id | doaj.art-b4c22ed4963e4ec6b3b9d59698d4fbff |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-12-12T21:43:40Z |
| publishDate | 2022-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-b4c22ed4963e4ec6b3b9d59698d4fbff2022-12-22T00:10:58ZengElsevierJournal of Materials Research and Technology2238-78542022-05-011830263034High intensity orange-red emission of chemically deposited Sm3+-doped ZrO2 thin films - Beneficial effects of host and dopantO. Dimitrov0I. Stambolova1T. Babeva2K. Lazarova3G. Avdeev4M. Shipochka5R. Mladenova6S. Simeonova7Institute of Electrochemistry and Energy Systems, Bulgarian Academy of Sciences, Akad. G. Bonchev Str., Bl. 10, 1113, Sofia, Bulgaria; Corresponding author.Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Akad. G. Bonchev Str., Bl. 11, 1113, Sofia, BulgariaInstitute of Optical Materials and Technologies, Bulgarian Academy of Sciences, Akad. G. Bonchev str., Bl. 109, 1113, Sofia, BulgariaInstitute of Optical Materials and Technologies, Bulgarian Academy of Sciences, Akad. G. Bonchev str., Bl. 109, 1113, Sofia, BulgariaInstitute of Physical Chemistry, Bulgarian Academy of Sciences, Akad. G. Bonchev Str., Bl. 11, 1113, Sofia, BulgariaInstitute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Akad. G. Bonchev Str., Bl. 11, 1113, Sofia, BulgariaInstitute of Catalysis, Bulgarian Academy of Sciences, Akad. G. Bonchev Str., Bl. 11, 1113, Sofia, BulgariaFaculty of Chemistry and Pharmacy, Sofia University, 1 James Bourchier Blvd, 1164, Sofia, BulgariaSamarium doped (0.5–5 at.%) ZrO2 films with high surface and optical quality were obtained by sol–gel method using inorganic zirconium precursor. The morphology and roughness of the samples were investigated by scanning electron microscopy (SEM) and atomic force microscopy (AFM). A phase transition following the doping with Sm3+ ions was registered by the X-ray diffraction (XRD) method, leading to stabilization of the tetragonal ZrO2 phase. Optical parameters such as refractive index and extinction coefficient were determined for each sample. X-ray photoelectron spectroscopy (XPS) revealed the presence of carbon impurities as well as a shift of the valence band (VB) edge to lower binding energies with the increase of the dopant level. The electron paramagnetic resonance (EPR) proved the presence of oxygen vacancies and other defects (Zr3+, T-centers) in the structure of the films which prompted photoluminescence (PL) in the material. The emission spectra of the pure ZrO2 and Sm-doped samples revealed the beneficial effect of the host matrix, capable of boosting the characteristic orange-red emission of the Sm3+ ions. The obtained films have very high ratio of acceptor/donor emission intensity (Ia/Id = 25) making them promising candidates for applications in the field of photonics, including in the development of white LEDs.http://www.sciencedirect.com/science/article/pii/S2238785422005130ZirconiaPhase transformationPhotoluminescenceRare earth dopantOptical properties |
| spellingShingle | O. Dimitrov I. Stambolova T. Babeva K. Lazarova G. Avdeev M. Shipochka R. Mladenova S. Simeonova High intensity orange-red emission of chemically deposited Sm3+-doped ZrO2 thin films - Beneficial effects of host and dopant Journal of Materials Research and Technology Zirconia Phase transformation Photoluminescence Rare earth dopant Optical properties |
| title | High intensity orange-red emission of chemically deposited Sm3+-doped ZrO2 thin films - Beneficial effects of host and dopant |
| title_full | High intensity orange-red emission of chemically deposited Sm3+-doped ZrO2 thin films - Beneficial effects of host and dopant |
| title_fullStr | High intensity orange-red emission of chemically deposited Sm3+-doped ZrO2 thin films - Beneficial effects of host and dopant |
| title_full_unstemmed | High intensity orange-red emission of chemically deposited Sm3+-doped ZrO2 thin films - Beneficial effects of host and dopant |
| title_short | High intensity orange-red emission of chemically deposited Sm3+-doped ZrO2 thin films - Beneficial effects of host and dopant |
| title_sort | high intensity orange red emission of chemically deposited sm3 doped zro2 thin films beneficial effects of host and dopant |
| topic | Zirconia Phase transformation Photoluminescence Rare earth dopant Optical properties |
| url | http://www.sciencedirect.com/science/article/pii/S2238785422005130 |
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