Toward an energy-efficient synthesis method to improve persistent luminescence of Sr2MgSi2O7:Eu2+,Dy3+ materials

Flexible translucent persistent luminescent films based on Sr2MgSi2O7:Eu2+,Dy3+ cellulose ether composites

“…The precipitate was dried at 100 °C in a laboratory drying oven for 2 hours and then heated in a microwave oven for 30 min at 1000 W, which leads to temperatures close to 1200 °C. 13 Activated carbon was used as microwave susceptor to generate heat and produce a local reducing CO(g) atmosphere. This reducing atmosphere is provided to obtain Eu 2+ from the oxidized state of Eu 3+ .…”

“…This reducing atmosphere is provided to obtain Eu 2+ from the oxidized state of Eu 3+ . A full schematic setup of the microwave setting used can be found in the work of Merízio et al 13…”

“…For example, the reduction process of Eu 2+ in Sr 2 MgSi 2 O 7 with 5% CO atmosphere is efficient only at temperatures above 900 °C. 13 Translucent and flexible persistent luminescent materials are seldom reported in the literature. Considering that, this study presents a new translucent persistent luminescent composite based on Sr 2 MgSi 2 O 7 :Eu 2+ ,Dy 3+ (SMSO) and hydroxypropyl methylcellulose (HPMC).…”

“…This reducing atmosphere is provided to obtain Eu 2+ from the oxidized state of Eu 3+ . A full schematic setup of the microwave setting used can be found in the work of Merízio et al 13 APTES coating was applied by adding 400 µL of (3-aminopropil) triethoxysilane (APTES) in a suspension containing SMSO (100 mg) in ethanol (10 mL). This mixture was stirred for 24 h at room temperature.…”

“…For example, the reduction process of Eu 2+ in Sr 2 MgSi 2 O 7 with 5% CO atmosphere is efficient only at temperatures above 900 °C. 13…”