Eu3+ as a marker for formation of core-shell system: YVO4:SiO2
Eu3+ doped in core and shell (YVO4:SiO2) nanoparticles show luminescence peaks corresponding to magnetic and electric dipole transitions of Eu3+. When Eu3+ ions occupy Y3+ sites, Eu3+ ions are surrounded by eight O2− ions, which is highly asymmetric (D2d). This asymmetric environment can be used to...
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| Format: | Article |
| Language: | English |
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Elsevier
2017-01-01
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| Series: | OpenNano |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S235295201630024X |
| _version_ | 1828352151256039424 |
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| author | L. Robindro Singh |
| author_facet | L. Robindro Singh |
| author_sort | L. Robindro Singh |
| collection | DOAJ |
| description | Eu3+ doped in core and shell (YVO4:SiO2) nanoparticles show luminescence peaks corresponding to magnetic and electric dipole transitions of Eu3+. When Eu3+ ions occupy Y3+ sites, Eu3+ ions are surrounded by eight O2− ions, which is highly asymmetric (D2d). This asymmetric environment can be used to see amount of Eu3+ ions present in Y3+ sites. When Eu3+ ions are present in shell (SiO2), luminescence intensity is very weak. On further annealing, luminescence intensity increases due to diffusion of Eu3+ ions towards to YVO4 core through pores of SiO2. Distribution of Eu3+ in core and shell are supported by lifetime studies. |
| first_indexed | 2024-04-14T01:49:54Z |
| format | Article |
| id | doaj.art-8923b992238d4ef39b284f30c8666650 |
| institution | Directory Open Access Journal |
| issn | 2352-9520 |
| language | English |
| last_indexed | 2024-04-14T01:49:54Z |
| publishDate | 2017-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | OpenNano |
| spelling | doaj.art-8923b992238d4ef39b284f30c86666502022-12-22T02:19:23ZengElsevierOpenNano2352-95202017-01-012C576310.1016/j.onano.2017.01.002Eu3+ as a marker for formation of core-shell system: YVO4:SiO2L. Robindro SinghEu3+ doped in core and shell (YVO4:SiO2) nanoparticles show luminescence peaks corresponding to magnetic and electric dipole transitions of Eu3+. When Eu3+ ions occupy Y3+ sites, Eu3+ ions are surrounded by eight O2− ions, which is highly asymmetric (D2d). This asymmetric environment can be used to see amount of Eu3+ ions present in Y3+ sites. When Eu3+ ions are present in shell (SiO2), luminescence intensity is very weak. On further annealing, luminescence intensity increases due to diffusion of Eu3+ ions towards to YVO4 core through pores of SiO2. Distribution of Eu3+ in core and shell are supported by lifetime studies.http://www.sciencedirect.com/science/article/pii/S235295201630024XNanoparticlesExcitationCharge transfer bandEnergy transfer |
| spellingShingle | L. Robindro Singh Eu3+ as a marker for formation of core-shell system: YVO4:SiO2 OpenNano Nanoparticles Excitation Charge transfer band Energy transfer |
| title | Eu3+ as a marker for formation of core-shell system: YVO4:SiO2 |
| title_full | Eu3+ as a marker for formation of core-shell system: YVO4:SiO2 |
| title_fullStr | Eu3+ as a marker for formation of core-shell system: YVO4:SiO2 |
| title_full_unstemmed | Eu3+ as a marker for formation of core-shell system: YVO4:SiO2 |
| title_short | Eu3+ as a marker for formation of core-shell system: YVO4:SiO2 |
| title_sort | eu3 as a marker for formation of core shell system yvo4 sio2 |
| topic | Nanoparticles Excitation Charge transfer band Energy transfer |
| url | http://www.sciencedirect.com/science/article/pii/S235295201630024X |
| work_keys_str_mv | AT lrobindrosingh eu3asamarkerforformationofcoreshellsystemyvo4sio2 |