Effect of Eu3+ - dopant concentration on structural and luminescence properties of SrY2O4 nanocrystalline phosphor and potential application in dye-sensitized solar cells
SrY2O4 phosphors were doped with different concentrations of Eu3+ (0.5, 1, 2, 4, 8 and 10 at %) in order to investigate the maximal doping concentration of Eu3+ and its implementation in solar cell devices. Samples were synthesized by a combustion method using citric acid and glycine as a f...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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International Institute for the Science of Sintering, Beograd
2018-01-01
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| Series: | Science of Sintering |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/0350-820X/2018/0350-820X1803347L.pdf |
| Summary: | SrY2O4 phosphors were doped with different concentrations of Eu3+ (0.5, 1, 2,
4, 8 and 10 at %) in order to investigate the maximal doping concentration
of Eu3+ and its implementation in solar cell devices. Samples were
synthesized by a combustion method using citric acid and glycine as a fuel.
The X-ray diffraction (XRD) patterns confirmed pure phase of SrY2O4. FE-SEM
micrographs showed agglomerate phenomenon with spherical-like shape
particles and diameter of about 50 nm. Upon excitation with 280 nm, emission
spectra were recorded in the range from 450-750 nm and in all samples the
same energy transitions were observed 5D0 → 7FJ (J = 1, 2, 3 and 4) with
maximal intensity for sample with 8 at % of Eu3+. That sample was further
examined for the purpose of application in solar cell devices and showed
high value of efficiency at low light intensities. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. 45005] |
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| ISSN: | 0350-820X 1820-7413 |