Luminescence properties of rare-earth-doped fluoride borate crystals
Source abstract
Abstract
Single crystals of undoped and Ce 3+, Tb 3+, and Eu 3+/Tb 3+/Ce 3+ co-doped Ba 12(BO 3) 6[BO 3][LiF 4] crystals were grown from high-temperature solutions. The Ba 12(BO 3) 6[BO 3][LiF 4] compound crystallizes in the structural type of barium orthoborate Ba 3(BO 3) 2 with porous Ba 12(BO 3) 6 6+ cationic framework filled with disordered anionic groups. The PL and PLE spectra of undoped and rare-earth-doped crystals were studied. The photoluminescence temperature dependences in the range of 77–300 K were recorded. The shape and position of lines in the spectra are typical of cerium, terbium, and europium ions. Luminescence lifetime constants were measured in the range of 77–300 К. It was shown that at the excitation wavelength of 300 nm and 370 nm at 300 K, Ba 12(BO 3) 6[BO 3][LiF 4]:Eu 3+, Tb 3+, Ce 3+ crystals have luminescence close to daylight with CIE chromaticity coordinates and correlated color temperature of (0.335; 0.309), 5352 K and (0.295; 0.362), 7121 K, respectively. Our results indicate that rare-earth-doped Ba 12(BO 3) 6[BO 3][LiF 4] crystals can be considered a candidate for the conversion of LED emission into white light.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · Crystal Structures and Properties · Glass properties and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (44)
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