The co-optimization of efficiency and emission bandwidth in GSAGG:Cr3+ NIR ceramic phosphors

Optimized Gd2O2S:Pr Scintillation Films for X-ray Flat Panel Imaging: Balancing Enhanced Efficiency with Flexibility

“…These features effectively mitigate the limitations of bulk scintillators. Particularly, the development of perovskite nanocrystals in recent years has attracted significant attention toward flexible scintillation films. − However, the light yield of perovskite nanocrystal scintillators remains inferior in comparison to traditional bulk scintillation materials owing to their small Stokes shift and strong self-absorption . Inspired by flexible perovskite nanocrystal scintillation films, the combination of traditional granular scintillators with an organic polymer matrix has the potential to yield similar benefits. − Praseodymium-doped gadolinium oxysulfide (Gd 2 O 2 S:Pr) exhibits excellent characteristics, including high intrinsic X-ray to light conversion efficiency, rendering it suitable for X-ray imaging applications. − Although Gd 2 O 2 S:Pr phosphors or ceramic scintillators have been successfully applied in flat panels and CT detectors, flexible scintillation films based on Gd 2 O 2 S:Pr phosphors have seldom been reported …”

Crystallization of Na2SrGe6O14:Cr3+,Yb3+ Glass Ceramics Enabling a Watt‐Level Output Power NIR‐I/NIR‐II Lighting Source

“…Transparent Cr‐doped ceramics with excellent Abs/EQE are successfully fabricated in garnet, e.g., Gd 3 Al 2 Ga 3 O 12 :Cr 3+ (GAGG:Cr 3+ , Abs/EQE = 72.0%/70.1%) and Gd 3 Al 1.5 Sc 0.5 Ga 3 O 12 :Cr 3+ (GASGG:Cr 3+ , Abs/EQE = 78.8%/47.2%). [ 26,27 ] However, the strict and complex preparation process conditions, including high vacuum degree, active precursor, and harsh fabrication equipment, are adverse to mass production. In contrast, glass ceramics (GCs) containing crystals and glass matrix crystallized from glass precursor without pressure assistance is a novel way to fabricate bulk materials.…”