Transparent 0D Antimony Halides Glassy Wafer with Near‐Unity Photoluminescence Quantum Yield for High Spatial Resolution X‐Ray Imaging

Abstract

Large‐sized transparent scintillators with a high photoluminescent quantum yield (PLQY) and self‐absorption‐free properties are highly desired to achieve high spatial resolution X‐ray imaging. In this research, a transparent 0D organic–inorganic (ETP)2SbCl5 (ETP = Ethyl triphenylphosphine) amorphous wafer is developed by melting the ETPCl and SbCl3 mixture and then undergoing a quenching process. The obtained amorphous wafer exhibits a high light transmittance of 86% in the range of 450–800 nm. It also shows a light emission peak at 624 nm, a Stokes shift of 259 nm, and PLQY approaching unity (99.3%). These properties enable it to produce X‐ray images with a high spatial resolution of 19.0 lp mm−1 at a modulation transfer function (MTF) value of 0.2, among the best values reported. Additionally, it also shows remarkable stability under continuous X‐ray illumination. Its unique optical properties and ability to be processed in large sizes make the organic–inorganic metal halide transparent wafer a promising scintillator. This also demonstrates the potential application of the melt‐quenching method in fabricating highly luminescent, low‐electronic‐dimensional metal halide wafers.

Large-Area Transparent Antimony-Based Perovskite Glass for High-Resolution X-ray Imaging

“…The variation in transparency is primarily attributed to different degrees of light scattering (Figure c, e) . X-ray diffraction (XRD) patterns of polycrystalline samples prepared by annealing the (C 20 H 20 P) 2 SbCl 5 transparent media are consistent with those of (C 20 H 20 P) 2 SbCl 5 single crystals. , Conversely, the (C 20 H 20 P) 2 SbCl 5 transparent medium exhibits only a broad peak. This suggests the presence of a fully amorphous (C 20 H 20 P) 2 SbCl 5 structure resulting from random fluctuations of molecules within the glass matrix …”

Multiphase Transformation in Hybrid Copper(I)-Based Halides Enable Improved X-ray Scintillation and Real-Time Imaging

“…Unlike 0D all-inorganic metal halides, 0D hybrid metal halides were able to be melt at very low temperatures to achieve a crystal-glass phase transition. − It is surprising that the resulting 0D hybrid metal halide glass, formed from a molten liquid, demonstrates outstanding transparency, excellent workability, and favorable scintillation properties, particularly in the case of Mn-based hybrid metal halides. , The novel 0D hybrid metal halide glass scintillators exhibit promising X-ray imaging capabilities. , However, there is an urgent need to address the issues of stability and long lifetime in Mn-based metal halides, which are crucial for practical scintillation applications. Therefore, it is crucial to design 0D hybrid metal halides that can melt to form a stable glassy state before the decomposition showing high X-ray absorption efficiency, short decay time, and excellent scintillation performance.…”

Evolution of fractal patterns in lead-free zero-dimensional perovskite Cs2InBr5(H2O)

“…8–14 The increasing academic and commercial potential in solar cells and optoelectronic devices has been demonstrated. 15–21 Many synthesis routes have been proposed for 0D halide perovskites, including single-crystal growth, thin films, microcrystals, and nanoparticles. 22–24 The solution route presents a versatile method, enabling the precise control of size and shape.…”