Enhancement of luminescence intensity and increase of emission lifetime in Eu3+-doped 3CdO–Al2O3–3SiO2 amorphous system

Frequency-conversion properties of Eu3+ doped chlorophosphate glass ceramics containing CaCl2 nanocrystals

“…3. Similar excitation spectra for Eu 3 + doped glasses and glass ceramics were reported in previous works [9,13,14,21,[24][25][26]. The strongest peak at 395 nm for Eu 3 + :Glass and particularly strong peaks for Eu 3 + doped glass ceramics samples at 300 nm in Fig.…”

“…This is because Eu 3 + ions have a narrow emission band, producing almost monochromatic light, and also long lifetimes of their optically active states [12][13][14][15].…”

Luminescence properties of the Eu-doped porous glass and spontaneous reduction of Eu3+ to Eu2+

“…There are many water molecules in porous glass at relatively low temperature. The vibration frequency of OH À obtained is about 2700-3700 cm À1 much higher than other vibration [14]. And the 5 D 0 energy level of Eu 3+ ions can be depopulated through interaction with water molecules by vibrational interaction, which leads to non-radiative degradation of the excitation energy and quenches the luminescence of Eu 3+ ions in porous glass [14,15].…”

Sol–gel synthesis and luminescence properties of CdSiO3: Mn2+, Eu3+ phosphor

“…In the excitation spectra, two broad bands centered at about 248 and 280 nm, which could be seen in all these four phosphors, could be attributed to the host absorption [17]. And the other two peaks located at 359 and 393 nm in the excitation spectrum of CdSiO 3 : Mn 2+ , Eu 3+ phosphor belonged to the 7 F 0 → 5 D 4 and 7 F 0 → 5 L 6 transitions of Eu 3+ ion [29,30]. With the temperature increasing, the intensity of the Mn 2+ and Eu 3+ emission became stronger.…”