Photoluminescence and X-ray excited scintillating properties of Tb3+-doped borosilicate aluminate glass scintillators

All‐Inorganic Glass Scintillators: Scintillation Mechanism, Materials, and Applications

“…Huang et al prepared a series of Tb 3+ doped borosilicate aluminate glass scintillators with a high transparency over 80%. [ 65 ] Wantana et al measured and analyzed the physical and scintillation properties of Ce 3+ doped phosphate glass, and found that the density of the glass increased with the increase of Ce 3+ concentration. However, due to the concentration quenching, there was a maximum emission intensity at the concentration of 2 mol% Ce 3+ .…”

“…The remaining electron-hole pairs are consumed by thermal radiation through electron-phonon coupling. [33,[65][66][67][68] The performance of rare earth ions doped glass scintillators strongly hinges on the density and phonon energy of the glass or nanocrystals in glass.…”

“…Previously, Tb 3+ and Ce 3+ were directly distributed in glass matrix. [37,65] To avoid luminescent quenching, forming nanocrystals with low phonon energy and fluoride microcrystals are mainly used at present, such as BaLuF 5 , Ba 2 LaF 7 , Lu 6 O 5 F 8 , CaF 2 , etc., [36,70,85,86] can disperse the rare earth ions and increase the luminescent quenching threshold.…”

“…Over the past decade, significant progress has been made in increasing the XEL light yield of glass scintillators. The XEL integrated intensity (%BGO) has increased gradually from its initial levels of 9.6% [37] and 26% [70] to a range of 40-70%, [65,85,86,97] and it has currently surpassed 140%. [33,87,92,93,95] In particular, the work of Teng et al has broken through the highest XEL integral intensity based on glass scintillator so far.…”

A hollow NaBiF4:Tb nanoscintillator with ultra-weak afterglow for high-resolution X-ray imaging

“…The XEOL intensity of the Tb 3+ activators was enhanced after the incorporation of Gd 3+ ions, which was attributed to the increased electron population efficiency via energy transfer from Gd 3+ : 6 P 7/2 to Tb 3+ : 5 D 3 . 33,34 The Er 3+ : 4 G 9/2 and Ho 3+ : 5 G 5 levels are higher than that of Tb 3+ : 5 D 3 , and they can capture lots of secondary electrons in the conduction band (Fig. 3c).…”