Combustion Synthesis of Nanocrystalline Y2O2S: Eu 3+ , Mg 2+ , Ti 4+ Red Long-Lasting Phosphors Using Mixture Fuel of Thiourea and Citric Acid

Xiao Bao Han; Xiang Guo Li; Gui Hua Peng; Zhen Hua Liang; Xia Wang

doi:10.4028/www.scientific.net/AMR.652-654.669

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 652-654Combustion Synthesis of Nanocrystalline Y2O2S: Eu...

Combustion Synthesis of Nanocrystalline Y₂O₂S: Eu ³⁺ , Mg ²⁺ , Ti ⁴⁺ Red Long-Lasting Phosphors Using Mixture Fuel of Thiourea and Citric Acid

Abstract:

Nanocrystalline Y₂O₂S: Eu ³⁺ , Mg ²⁺ , Ti ⁴⁺ red long-lasting phosphor was synthesized successfully by combustion method using thiourea and citric acid as fuel. The structure, morphology and luminescent properties of these phosphors were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM) and photoluminescence spectroscopy (PL). The experimental results revealed that the phosphor was composed of sheet-shaped Y₂O₂S with hexagonal crystal structure. They exhibited strong red emission at 617 nm and 626nm. In addition, the dosage of citric acid has great effect on the phosphor. When molar ratio of citric acid to Y ³⁺ is 1.3, the resulted phosphor gives the highest emission intensity.

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Advanced Materials Research (Volumes 652-654)

Pages:

669-672

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.652-654.669

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Online since:

January 2013

Authors:

Xiao Bao Han, Xiang Guo Li, Gui Hua Peng, Zhen Hua Liang, Xia Wang

Keywords:

Combustion Synthesis, Luminescence, Nanomaterial, Phosphor, Y₂O₂S

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