Improvement of optical properties of one-dimensional CaAl12O19:Mn4+ phosphor via Er3+- and Tb3+- doped bioactive glass powders
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Date
2021
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Abstract
Until now, because of the being a candidate for the red-emitting material the CaAl12O19:Mn4+ phosphor (CAO:Mn) has been widely used especially in white light-emitting diodes (WLEDs). In this study, the emission-based luminescence properties of CaAl12O19:Mn4+ red phosphor synthesized via sol-gel method was studied in the absence and presence of Er3+- and Tb3+-doped 13–93 bioactive glass powders in ethyl cellulose (EC) matrix in detail. Upon the addition of un-doped and Er3+- and Tb3+- doped bioactive glass powders, the CAO:Mn phosphor resulted in 44%, 92% and 88% increase in the emission intensity, respectively. The luminescence and decay time characteristics of the synthesized phosphor were also investigated in terms of microsecond time scale. The proposed material may bring a new inside for the existing problems of the red phosphors regarding the brightness, colour correlation temperature and colour rendering index. © 2021 Elsevier B.V.
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Brightness , Emission , Glass , Light , Optical Properties , Phosphors , Photoluminescence , United Nations , Bioactive glass , Light emitting diodes , Optical properties , Phosphors , Powders , Sol-gel process , Sol-gels , Bioactives , Caal12O19:mn4+ red phosphor , Glass Powder , One-dimensional , Optical- , Property , Red phosphors , Red-emitting materials , Synthesised , White LED's , Photoluminescence