Improvement of optical properties of one-dimensional CaAl12O19:Mn4+ phosphor via Er3+- and Tb3+- doped bioactive glass powders

• Published in: Optical materials Vol. 117; p. 111201
• Main Authors: Oguzlar, Sibel, Zeyrek Ongun, Merve, Deliormanlı, Aylin M.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.07.2021
• Subjects: Bioactive glass; CaAl12O19:Mn4+ red phosphor; Photoluminescence; White LED; Bioactive glass; Photoluminescence; CaAl12O19:Mn4+ red phosphor; White LED
• ISSN: 0925-3467; 1873-1252
• DOI: 10.1016/j.optmat.2021.111201

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. •The optical properties of the CaAl12O19:Mn4+(CAO:Mn) along with Er3+- and Tb3+- doped bioactive glass powders were evaluated.•The intensity CAO:Mn; has been enhanced along with 1% Er3+- and 5% Tb3+- doped bioactive glass powders up to 92% and 88%, respectively.•The improvement in the efficiency of the phosphor has been performed by a cost-effective way.