کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1522409 | 1511821 | 2013 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Phosphor thermometry: On the synthesis and characterisation of Y3Al5O12:Eu (YAG:Eu) and YAlO3:Eu (YAP:Eu) Phosphor thermometry: On the synthesis and characterisation of Y3Al5O12:Eu (YAG:Eu) and YAlO3:Eu (YAP:Eu)](/preview/png/1522409.png)
With regard to phosphor thermometry, the materials Y3Al5O12:Eu (YAG:Eu) and YAlO3:Eu (YAP:Eu) were synthesised and characterised in order to substitute the commonly used thermographic phosphor Y2O3:Eu, whose temperature sensitive luminescence lifetime exhibits a strong and most often undesirable cross-sensitivity to the oxygen concentration of the surrounding gas phase. The synthesis is outlined in detail and the crystallographic structure was characterised by X-ray diffraction. In a second step, the luminescence properties following pulsed UV laser excitation were determined. In this context, the emission spectra and the temperature lifetime characteristics were monitored. For Y3Al5O12:Eu and YAlO3:Eu, temperature sensitive ranges of 1000 K–1470 K and 850 K–1300 K were identified. Contrary to Y2O3:Eu, both materials do show much lower cross-sensitivities to the oxygen concentration of the surrounding gas phase.
► Y3Al5O12:Eu and YAlO3:Eu were synthesised and characterised.
► The synthesis is outlined and the crystallographic structure was characterised.
► Emission spectra and the temperature lifetime characteristics were monitored.
► Compared to Y2O3:Eu lower sensitivities to the oxyg. conc. of the gas phase emerged.
Journal: Materials Chemistry and Physics - Volume 140, Issues 2–3, 15 July 2013, Pages 435–440