The effects of heat-Treatments with various conditions such as temperature, atmosphere on photoluminescence properties of (Ba, Sr)2SiO4:Eu2+ phosphors were investigated in detail. The change of Photoluminescence and XRD pattern of (Ba, Sr)2SiO4:Eu2+ phosphors heat-Treated at various temperatures revealed that the reduction from Eu3+ to Eu2+ in the precursor powder was effectively promoted at the temperatures higher than melting temperature of fluxing agent. We also found that photoluminescence properties and particle shape of (Ba, Sr)2SiO4:Eu2+ phosphors were deeply affected by the incomplete reduction of Eu (Eu3+→Eu2+) and fluxing effect of BaCl2, and they were caused by a very small quantity of oxygen gas under reduced atmosphere.
|Number of pages||6|
|Journal||Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy|
|Publication status||Published - 2016 Sept|
- Heat treatment