Effect of Different Heating Process on the Photoluminescence Properties of Perovskite Eu-Doped BaZrO3 Powder

Abstract

Abstract:In this study, BaZrO 3 :Eu 0.025 powder was synthesized through the solid-state reaction method with two different heating processes. For the one-step process, the BaZrO 3 :Eu 0.025 powder was heated to 1000˝C-1400˝C for 2 h. For the two-step heating process, the BaZrO 3 :Eu 0.025 powder was pre-heated at 800˝C for 2 h, after being cooled to room temperature and ground, then the powder was heated to 1000˝C-1400˝C again for 2 h. The optimum excitation optical wavelength of BaZrO 3 :Eu 0.025 powders were 271 nm and the maximum intensity of the emission spectrum of BaZrO 3 :Eu 0.025 powders increased with increasing heating temperature. The all-heated BaZrO 3 :Eu 0.025 powders showed two strong orange emission bands peaking at the wavelengths of 574 and 596 nm and two weak emission bands peaking at 620 and 650 nm. As the heating temperatures were 1300˝C and 1400˝C, the maximum intensity of one-step heating BaZrO 3 :Eu 0.025 powders appeared at the 5 D 0 -7 F 0 (574 nm) and the maximum intensity of one-step heating BaZrO 3 :Eu 0.025 powders appeared at the 5 D 0 -7 F 1 (596 nm) transitions of Eu 3+ ions, respectively.

Effects of the Concentration of Eu3+ Ions and Synthesizing Temperature on the Luminescence Properties of Sr2−xEuxZnMoO6 Phosphors

“…These previous results [6,16], and the results this study, suggest that the transitions of Eu 3+ ions between different energy bands are affected by the host materials of the prepared phosphors.…”

“…Liu and Wang's research also showed that the emission intensities of 5 D0-7 F0 (576 nm), 5 D0-7 F1 (597 nm), and 5 D0-7 F2 (616, 623 nm) had almost the same values, even if the Eu concentration in the BaZr1−xEuxO3 phosphor powders was different [26]. These previous results [6,16], and the results this study, suggest that the transitions of Eu 3+ ions between different energy bands are affected by the host materials of the prepared phosphors.…”

“…In a previous study, the spectra of BaZrO3 doped with Eu 3+ powders consisted of a series of resolved emission peaks located at 576 nm, 597 nm, 616 nm, 623 nm, 651 nm, 673 nm, 696 nm, and 704 nm, which are assignable to the 5 D0-7 FJ (J = 0, 1, 2, 3, 4) transitions of Eu 3+ ions, namely, 5 D0-7 F0 (576 nm), 5 D0-7 F1 (597 nm), 5 D0-7 F2 (616 nm, 623 nm), 5 D0-7 F3 (651 nm), and 5 D0-7 F4 (673 nm, 696 nm, and 704 nm) [16]. Liu and Wang's research also showed that the emission intensities of 5 D0-7 F0 (576 nm), 5 D0-7 F1 (597 nm), and 5 D0-7 F2 (616, 623 nm) had almost the same values, even if the Eu concentration in the BaZr1−xEuxO3 phosphor powders was different [26].…”

Nanocomposite Antimony-Germanate-Borate Glass Fibers Doped with Eu3+ Ions with Self-Assembling Silver Nanoparticles for Photonic Applications

“…Moreover, europium embedded in low phonon glasses is characterized by a high emission efficiency in the visible range as a result of wide energy gap (approx. ∆E = 12,000 cm −1 ) between the D 0 emitting state and the 7 F J ground multiplet [7,8]. The advantage of the Eu 3+ ion is also its common use as a spectroscopic probe of the site symmetry in different host matrices [9,10].…”