Yellow-to-orange emission from Bi^2+-doped RF_2 (R = Ca and Sr) phosphors
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چکیده
منابع مشابه
Europium doped thiosilicate phosphors of the alkaline earth metals Mg, Ca, Sr and Ba: structure and luminescence
or Ce 3+ as an activator on the other side. Also, the quantum efficiency of the thiosilicates is acceptable (e.g. 30% for Sr2SiS4, 35% for Ca2SiS4) and open to further improvement, e.g. by finetuning the synthesis conditions [1]. The thermal quenching temperature T0.5 (defined as the temperature for which the emission intensity is half of the intensity at low temperature) in Ca2SiS4:Eu is suffi...
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(Sr, Ca, Ba)Al₂O₄:Eu2+, Dy3+ phosphors were prepared via a high temperature solid-state reaction method. The correlation of phase structure, optical properties and lifetimes of the phosphors are investigated in this work. For the (Sr, Ca)Al₂O₄:Eu2+,Dy3+ phosphors, the different phase formation from monoclinic SrAl₂O₄ phase to hexagonal SrAl₂O₄ phase to monoclinic CaAl₂O₄ phase was observed when...
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In this chapter, basic concepts involved in luminescencewill be discussed.Wewill take a closer look at a number of excitation mechanisms which are involved in generating luminescence and processes which lead to luminescence, taking illustrative examples from luminescentmaterials applied in fluorescent lamps and cathode ray tubes.With respect to fluorescent lamps, we will restrict ourselves to d...
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ژورنال
عنوان ژورنال: Optics Express
سال: 2013
ISSN: 1094-4087
DOI: 10.1364/oe.21.015728