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V B PAWADE
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Volume 45 All articles Published: 13 October 2022 Article ID 0199
A N YERPUDE S K RAMTEKE V B PAWADE N S KOKODE S J DHOBLE
This article reports photoluminescence in Eu$^{3+}$ and Dy$^{3+}$ doped Ca$_2$SrAl$_2$O$_6$ aluminate phosphor. Here combustion technique is used to synthesize a series of phosphors. The excitation spectra of Ca$_2$SrAl$_2$O$_6$:Eu$^{3+}$phosphor appears at 396 nm, under which we get a prominent emission bands at 590–596 nm and another peak located at 616 nm that corresponds to the orange-red region. These spectral bands are assigned due to ${}^5$D$_0$${\rightarrow}$${}^7$F$_1$, 7F2 electronic transitions of activator Eu$^{3+}$ ion, respectively. Whereas, Ca$_2$SrAl$_2$O$_6$:Dy$^{3+}$ phosphor shows two bands that correspond to 476 and 573 nm when excited by 352 nm. These two emission peaks correspond to the well-known ${}^4$F$_{9/2}$${\rightarrow}$${}^6$H$_{15/2}$, ${}^6$H$_{13/2}$ transitions of rare-earth Dy$^{3+}$ ion, respectively. Thus, from the observed photoluminescence properties, it is seen that prepared aluminate phosphor may be a suitable material for solid-state lighting.
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Bulletin of Materials Science
Volume 46, 2023
All articles
Continuous Article Publishing mode
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Bulletin of Materials Science | News
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Dr Shanti Swarup Bhatnagar for Science and Technology
Posted on October 12, 2020Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
Chemical Sciences 2020Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
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Posted on July 25, 2019Click here for Editorial Note on CAP Mode
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