Preparation and luminescence of Dy3+ doped glass-ceramics containing ZnMoO4

Dy3+‐ and/or Sm3+‐doped glass–ceramics containing NaGd(MoO4)2 crystalline phase for warm white light applications

“…These excited states include 4 F 7/2 (387 nm), 4 G 11/2 (426 nm), 4 I 15/2 (453 nm), 4 F 9/2 (475 nm), 6 F 3/2 (749 nm), 6 F 5/2 (797 nm), 6 F 7/2 (893 nm), and 6 F 9/2 + 6 H 7/2 (1087 nm), respectively. 20,45,[52][53][54][55][56] As the amount of Dy 2 O 3 in the glass increases, the absorption peak associated with it becomes stronger, indicating a higher concentration of Dy 3+ ions in the glass.…”

“…Phosphors have strong crystal fields and high luminous efficiency but inevitably have the drawbacks of low color rendering index, insufficient thermal stability, and poor light transmittance. 20,21 These drawbacks, in turn, restrict their utilization in various domains, such as solid-state lighting displays and solar cells, among others. Glass materials seem to be ideal luminescent matrix materials because of their simple preparation and easy processing, as well as their excellent transmittance.…”

“…Although the preparation of polycrystalline materials is simplified compared to single crystals, the light scattering between grain boundaries is serious, which limits their application in optics. Phosphors have strong crystal fields and high luminous efficiency but inevitably have the drawbacks of low color rendering index, insufficient thermal stability, and poor light transmittance 20,21 . These drawbacks, in turn, restrict their utilization in various domains, such as solid‐state lighting displays and solar cells, among others.…”

Wet Chemical Synthesis and Optical Properties of Co2+-Doped Magnesium Stannate Ceramics

“…If the critical distance is less than 5 Å, exchange interaction is predominant. For greater values of R C , the energy transfer process is mainly governed by multipolar interactions [30][31][32][33] , which is the case of Mg 2 SnO 4 :Co 2+ . According to Dexter-Schulman theory, the relationship between the emission intensity and the activator concentration can be expressed as Equation 2 30,31,33 :…”

Study on the luminescence properties of Dy3+ doped glass ceramics containing Ba2NaNb5O15 crystal phase

“…Among rare earth ions, Dy 3+ can generate characteristic emission peaks in yellow and blue wavebands under ultraviolet excitation [4], resulting in white light emission, which makes Dy 3+ ions have important application value in the field of solid-state lighting. There are many reports on the research of Dy 3+ doped luminescent materials, and these studies have mainly focused on phosphors [5][6][7], while less research on the glass-ceramics [8]. For optical functional glass-ceramics, the internal crystal phase has a crucial impact on the luminescent properties.…”