Self-surfactant room-temperature synthesis of morphology-controlled K_0.3Bi_0.7F_2.4 nanoscintillators

Abstract

Bismuth-based fluoride nanocrystalline materials are becoming an emerging class of host matrixes for luminescent lanthanide ions (Ln3+). However, the synthesis of morphology-controlled bismuth-based fluoride nanocrystals still remains a challenging work....

Colloidal KLu3F10:Tb3+ persistent luminescence nanocrystal based flexible detectors for 3D X-ray imaging

“…Subsequently, the resulting composites were thoroughly homogenized using a glass mortar and subjected to vacuum degassing in an oven. 46 The KLF:Tb@PDMS mixture solution was dropped onto a glass plate and allowed to naturally level, followed by thermal treatment at 80 °C for 1 h and 120 °C for 2 h to produce KLF:Tb@PDMS composite films.…”

Methylene blue loaded K0.3Bi0.7F2.4:Yb,Er upconversion nanoparticles for near-infrared activated photodynamic therapy

“…15,18 Consequently, lanthanide-doped bismuth fluorides are emerging as a promising family of phosphor materials because of their unique characteristics, such as absence of toxic elements, excellent luminescence efficiency, photostability, low phonon energy and high refractive index. [19][20][21][22][23] Apart from this bismuth is a low-cost and non-toxic metal, which has been extensively used in display, optical sensing and biomedical fields. 24,25 Bismuth-containing fluorides have attracted much attention as host materials for doping rare-earth ions because of similar oxidation states and comparable ionic radii of Bi 3+ (r = 1.31 Å) and Ln 3+ ions (lanthanide ions) [Yb 3+ (r = 1.125 Å), Er 3+ (r = 1.144 Å)], thus enabling the favourable accommodation of dopant ions.…”

“…15,18 Consequently, lanthanide-doped bismuth fluorides are emerging as a promising family of phosphor materials because of their unique characteristics, such as absence of toxic elements, excellent luminescence efficiency, photostability, low phonon energy and high refractive index. 19–23 Apart from this bismuth is a low-cost and non-toxic metal, which has been extensively used in display, optical sensing and biomedical fields. 24,25…”

A NaBiF4:Gd/Tb nanoscintillator for high-resolution X-ray imaging

“…However, the limited availability and high cost of rare earth compounds restricts the commercialization of these scintillator materials. [31][32][33] As a consequence, development of less expensive and non-rare earth and environmentally friendly host materials for scintillators is required urgently. Fortunately, elements like bismuth can substitute the rare earth element in NaREF 4 -based matrices with comparable performance.…”