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Luminescent Eu 3 + doped NaLa ( WO 4 ) ( MoO 4 ) and Ba 2 CaMoO 6 prepared by the modified Pechini method
| Content Provider | Semantic Scholar |
|---|---|
| Author | Sletnes, Malin Skjærvøa, S. L. |
| Copyright Year | 2017 |
| Abstract | Modified Pechini synthesis routes were developed for synthesis of the novel red phosphor materials NaLa(WO4)(MoO4):Eu and Ba2CaMoO6:Eu. Phase pure NaLa(WO4)(MoO4):Eu was obtained at calcination temperatures ≥ 600 °C using malic acid or tartaric acid as complexing agents. Phase pure Ba2CaMoO6:Eu was attained using EDTA and citric acid, at calcination temperatures ≥ 800 °C. Choice of complexing agents were discussed on the basis of the solubility of the precursors, metal complex stability constants and conformations of the complexes. The powder properties were characterised using X-ray diffraction, thermal analysis and electron microscopy. Photoluminescence emission intensity was studied as a function of the complexing agents used and calcination temperature of the powders. Maximum emission intensity for NaLa(WO4)(MoO4):Eu was obtained at a calcination temperature of 600 °C, whereas the maximum for Ba2CaMoO6:Eu was obtained after calcination at 1100 °C. Both materials displayed desirable optical properties for use as phosphors in white light emitting diodes. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://brage.bibsys.no/xmlui/bitstream/handle/11250/2456942/Revised+manuscript_cristin.pdf?isAllowed=y&sequence=2 |
| Alternate Webpage(s) | https://brage.bibsys.no/xmlui/bitstream/handle/11250/2457842/Sletnes+et+al+-+Mo+and+W+based+luminescent+ocides+prepared+by+the+modified+Pechini+synthesis_Dalton_Trans_2015.pdf?isAllowed=y&sequence=2 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
