Scintillators based on aromatic dye molecules doped in a sol-gel glass host

Abstract

Ultraviolet and x-ray excited luminescence of fluorescein and rhodamine-6G doped sol-gel glasses were studied at room temperature with the aim of characterizing and understanding the scintillation performance of such materials. Fast energy transfer from the glass host to the dye luminescent centers was found. While the overall radioluminescence efficiency was rather low due to nonradiative losses in the glass host, our results demonstrate the potential of sol-gel technology as a versatile tool in controlling the spectral and time response of such unusual organic-inorganic scintillators

Scintillation detectors for x-rays

“…[66,79,81,92]. Sol-gel preparations have also been demonstrated to provide inorganic bulk glass elements doped with organic dye emission centres but further work is needed to enhance efficiency [146].…”

Nonlinear Optical Properties of a MMA‐Silica Nanohybrid Material Doped with Rhodamine 6G

“…To know photoluminescence spectra can be of interest to develop a solid-state dye laser [20]. A scintillator is a material used for detection and monitoring of accelerated particles like cosmic rays, among others; R6G is a dye used for scintillators due to its fluorescence emission properties [21].…”

Sequestration of cerium(III) bromide into mesoporous silica

“…Nanocomposite scintillators in which nano-sized scintillator particles are contained within an optically transparent matrix, have been the focus of numerous studies [9][10][11]. The primary challenges in developing a nanocomposite scintillator are 1) achieving a high loading level of the scintillator in order to obtain a gamma attenuation that is competitive with traditional singlecrystal scintillators, and 2) maintaining a high degree of optical transparency (low absorption and low scattering) in order to efficiently transport the scintillation light to the photodetector.…”