2017 Fiscal Year Final Research Report
Development of perovskite transition metal oxide persistent phosphor using combinatorial PLD method
| Project/Area Number |
16H06721
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Single-year Grants |
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| Research Field |
Inorganic industrial materials
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| Research Institution | The University of Tokyo |
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Principal Investigator |
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| Project Period (FY) |
2016-08-26 – 2018-03-31
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| Keywords | 蛍光体 / ペロブスカイト / 酸化物薄膜 |
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| Outline of Final Research Achievements |
Oxide phosphor thin films are expected as one of the functional materials responsible for oxide optoelectronics. In this study, we fabricated perovskite transition metal oxide phosphor thin films by pulsed laser deposition method to obtain high brightness persistent phosphors. As a result of examining (Ca,Sr)TiO3:Pr thin films, it was confirmed that strong luminescence can be observed by ultraviolet excitation by the microscope spectrophotometer system. The phosphor thin films with the same composition on the different substrates showed different photoluminescence spectra. Photoluminescence properties are controlled by the in-plane strain in the thin films which leads to the splitting of Ti 3d orbitals which forms the bottom of the conduction band in the perovskite phosphors.
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| Free Research Field |
無機材料化学、蛍光体
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