Fabrication and photoluminescent features of cool-white light emanating Dy3+ doped Ba5Zn4Gd8O21 nanophosphors for near UV-excited pc-WLEDs

Simultaneous modulation of multicolor upconversion emission and thermal‐sensing performance of Ba5Zn4Y8O21 phosphors

“…[12][13][14] In recent years, rare earth (RE)-based composite oxides such as Ba 5 Zn 4 RE 8 O 21 , especially Ba 5 Zn 4 Y 8 O 21 and Ba 5 Zn 4 Gd 8 O 21 host materials, have been developed as attractive matrices for exploring UCL, X-ray, and light-emitting diode phosphors. [15][16][17][18][19][20][21] Our previous work revealed that Ba 5 Zn 4 Y 8 O 21 is a very promising host for red UCL. 22 In this study, we systematically explore the UCL and temperature-sensing performance of Er 3+ single-doped and Yb 3+ -Er 3+ codoped Ba 5 Zn 4 Y 8 O 21 phosphors.…”

“…Specifically, metal composite oxides comprising two or more metal oxides have better stability, corrosion resistance, and heat resistance than unit oxides because of their complex and stable crystal structures 12–14 . In recent years, rare earth (RE)‐based composite oxides such as Ba 5 Zn 4 RE 8 O 21 , especially Ba 5 Zn 4 Y 8 O 21 and Ba 5 Zn 4 Gd 8 O 21 host materials, have been developed as attractive matrices for exploring UCL, X‐ray, and light‐emitting diode phosphors 15–21 . Our previous work revealed that Ba 5 Zn 4 Y 8 O 21 is a very promising host for red UCL 22 …”

Green emission from trivalent cerium doped LaAlO3/MgO nano-composite for photonic and latent finger printing applications

“…8–10 Additionally, oxides are highly stable and thus are devoid of afore-mentioned snags. 11 Concerning activator, rare-earth elements are mostly preferred for their sharp spectra. Amongst several rare-earths, Ce 3+ is a well-known paradigm of it for its abundance in nature and promising spectral emissions in green and blue region of visible spectrum due to its allowed f–d transitions.…”

Single-Phase Silicate Phosphors (Ba1.3Ca0.7−xSiO4:xDy3+) Doped with Dysprosium for White Solid-State Lighting

“…Meanwhile, the single-phase pc-WLED has been proposed as an alternative to the aforementioned UV-LED with yellow or RGB phosphors [17][18][19][20][21][22][23][24][25][26][27][28]. Here, the single host matrix (e.g., aluminate, borate, carbonate, uoride, molybdate, niobate, nitride, phosphate, silicate, tantalite, titanate, and tungstate) was doped with rare earth element (REE) ions (e.g., scandium, yttrium, and other lanthanides) and/or transition metal ions [3,29].…”

“…erefore, it should be necessary to study the single-phase single-doped phosphor materials. For this purpose, the trivalent dysprosium ion (Dy 3+ ) should be a good activator because it has two main emissions through the magnetic dipole transition at 482 nm (blue: 4 F 9/2 ⟶ 6 H 15/2 ) and the electric dipole transition at 577 nm (yellow: 4 F 9/2 ⟶ 6 H 13/2 ) [17][18][19][20][21][22][23][24][25][26][27][28]. Herein, the yellow-emitting process is hypersensitive to the local environment, indicating the luminous intensity is adjustable by modulating the crystal field.…”