Intense broadband radioluminescence from an Mn²⁺-doped aluminoborate glass scintillator

Abstract

Alternative scintillating materials are of current interest for radiation detection in diverse high energy applications, e.g., in X-ray imaging and high-energy physics. However, mono-crystal as the core material for scintillators...

Tunable Salt-Inclusion Chalcogenides for Ion Exchange, Photoluminescence, and Scintillation

“…The photoluminescent properties of [Cs 6 X ] A Ga 6 Q 12 :Mn 2+ inspired us to test whether these materials exhibit scintillation. − Single crystals of [Cs 6 X ] A Ga 6 S 12 :Mn 2+ were irradiated by X-rays inside a diffractometer equipped with a copper X-ray source while monitoring their emission using a digital camera (Figure a and Figures S39–S44). All [Cs 6 X ]­NaGa 6 S 12 :Mn 2+ crystals demonstrated bright orange scintillation, while [Cs 6– x K x Br]­KGa 6 S 12 :Mn 2+ and [Cs 6– x Rb x Cl]­RbGa 6 S 12 :Mn 2+ did not scintillate.…”

Highly resolved and refreshable X-ray imaging from Tb3+doped aluminosilicate oxyfluoride glass scintillators

“…A weak absorption peak located at 313 nm corresponding to the transition from 8 S 7/2 to 6 P 7/2 of Gd 3+ also appears. 23,40,41 According to the Beer-Lambert law (I = I 0 e Àad , where I 0 is the intensity of the incident light, I is the intensity of the transmission light, a is absorption coefficient and d is the path length), the equation of ad = Àln T can be obtained. The equation a = B(hv À E g ) 1/2 (where B is a constant coefficient, hv is photon energy and E g is band gap energy between the conduction band and the valence band) for the direct band material is used to obtain the energy gap of the glass specimens.…”

“…A weak absorption peak located at 313 nm corresponding to the transition from 8 S 7/2 to 6 P 7/2 of Gd 3+ also appears. 23,40,41…”

Luminescence enhancement of Mn4+‐activated double‐perovskite phosphors for LEDs through a co‐replacement strategy

“…To investigate the luminescence properties of the samples, the PLE and PL spectra of the samples were measured, as shown in Figure 3A. The wavelength was monitored at 707 nm, and four broadband excitation peaks were observed in the PLE spectrum, which could be determined from their positions, corresponding to the Mn 4+ –O 2− charge migration band (319 nm), 4 A 2g → 4 T 1g (355 nm), 4 A 2g → 2 T 2g (427 nm), and 4 A 2g → 4 T 2g (505 nm) transitions, respectively 40,41 . The property of the PLE spectrum indicates that the MLTO phosphor can be efficiently excited by UV light.…”

“…The wavelength was monitored at 707 nm, and four broadband excitation peaks were observed in the PLE spectrum, which could be determined from their positions, corresponding to the Mn 4+ -O 2− charge migration band (319 nm), 4 A 2g → 4 T 1g (355 nm), 4 A 2g → 2 T 2g (427 nm), and 4 A 2g → 4 T 2g (505 nm) transitions, respectively. 40,41 The property of the PLE spectrum indicates that the MLTO phosphor can be efficiently excited by UV light. Therefore, MLTO phosphors can be used to prepare far-red LEDs excited by UV chips, which have potential applications in indoor plant lighting.…”