Luminescence properties of M2TiO4:Eu3+, Li+ (M:Mg, Ca) and MgAl2O4:RE3+ (RE3+:Ho3+, Sm3+, and Yb3+)

Abstract

In this study, we aimed to prepare perovskiterelated and Eu 3?-activated Mg 2 TiO 4 , Ca 2 TiO 4 and (Mg, Ca) 2 TiO 4 doped with Eu 3? , Li ? , and spinel-oxide-type MgAl 2 O 4 doped with Ho 3? , Sm 3? , and Yb 3? through a solid-state reaction method under open atmosphere. The thermal behaviors of the samples were characterized by DTA/TG. The phase properties were characterized by X-ray diffraction and the effects of rare-earth ions (Eu 3? , Ho 3? , Sm 3? , and Yb 3?) on the luminescence properties of the hosts were investigated using a photoluminescence spectrometer. The morphology and elemental analysis of each sample were determined by SEM/EDX.

Photoluminescence and piezoelectric behaviour of Y2Zr2O7 pyrochlore‐based multifunctional materials and the influence of Eu3+ and Sm3+

“…In the emission spectrum, the emission bands centred at around 608 nm and 630 nm originated from the electric dipole transition 5 D 0 → 7 F 2 , while the emission band centred at around 593 nm originated from the 5 D 0 → 7 F 1 MDT. As shown in Figure (a), the other two maxima located at 653 nm and 713 nm could be attributed to 5 D 0 → 7 F 3 and 5 D 0 → 7 F 4 transitions of Eu 3+ . While the 5 D 0 → 7 F 2 electric dipole transition emission was split at 608 and 630 nm, the 5 D 0 → 7 F 1 MDT was a single peak at 590 nm.…”

La_1.90Eu_0.10Ru₂O₇ Sisteminin Sentezi ve Fotoluminesans Özelliklerinin İncelenmesi

“…Ancak faz oluşumuna ait bir endoterm gözlenmemektedir. [8][9][10][11][12][13]. La1.90Eu0.10Ru2O7, baskın olan kırmızı bölge ışıması sebebi ile opto-elektronik uygulamalar için aday olabilir.…”