Temperature dependence of persistent luminescence in β-irradiated SrAl2O4:Eu2+, Dy3+ phosphor

Photoluminescence and thermoluminescence of Ce3+ and Eu2+ in Ca2Al2SiO7 matrix

“…Long afterglow materials can absorb solar emission, store the emission in the form of energy and then release the energy slowly over a period of time, in the form of visible light. Owing to their storage of solar energy, long afterglow materials are widely used in many fields, such as displays, lighting devices, traffic signs, emergency signages, textile printing, and decorations [1,2]. Due to their energy efficiency and independence from external power sources, long afterglow phosphors are drawing more and more attention.…”

“…The melilites, which are a large family of tetragonal, noncentrosymmetric materials M 2 T (1) T (2)2 O 7 (M and T (1) are usually the alkaline-earths or transition metals and T (2) is usually Al, Ga, Si or Ge), have been investigated widely as optical materials. Due to their tetragonal and non-centrosymmetric crystal structure, Lns or transition metals can be accepted easily as constituents or dopants by the melilites, allowing the synthesis of high-quality doped single crystals [9].…”

Study on the energy transfer efficiency from SrAl 2 O 4 :Eu 2+ , Dy 3+ to light conversion agent of red-emitting phosphor: SrAl 2 O 4 :Eu 2+ , Dy 3+ /light conversion agent

“…As one of the persistent luminescence materials, SrAl 2 O 4 :Eu 2+ , Dy 3+ has been studied extensively because it can provide emission in yellow-green region [6][7][8][9] . And the SrAl 2 O 4 :Eu 2+ ,Dy 3+ has been used wildly because its persistent luminescence with emission visible to the naked eye has been reported up to 30 h [10][11][12] .…”

The effects of re-firing process under oxidizing atmosphere and temperatures on the properties of strontium aluminate phosphors

“…The photoluminescence involves the formation of traps followed by their thermal bleaching and the characteristic Eu 2+ emission. Clabau et al have recently investigated the subject of trap levels to oxygen vacancies-based defect located in the vicinity of the Eu 2+ in UV-irradiated, Eu 2+ doped long afterglow phosphors [9]. The type of host lattice is very important for Eu 2+ emission and europiumdoped host lattices can inhibit the property from the ultraviolet to red region of electro-magnetic spectrum.…”