Light Scattering Suppression in Organometallic Halide Glasses by Microporous Silicon Embedding

Organic–metal halide hybrids have advantageous luminous qualities and can be processed at low temperatures. These materials present a sustainable, cost-efficient, and effective solution for X-ray scintillators compared to all-inorganic scintillators. However, challenges, such as surface photon scattering and difficult uniformity control of the scintillator surface, continue to impede resolution improvement. In this study, we present a melt-quenching process to incorporate a zero-dimensional hybrid halide (MTP)2MnBr4 (methyltriphenylphosphonium bromide = MTPBr) into a microporous silicon substrate (3 × 3 cm). The (MTP)2MnBr4 glass embedded microporous silicon substrate scintillator screen achieves exceptional X-ray performance metrics by exploiting its outstanding luminescence properties, high optical transparency, and effective photon wave guidance via microporous arrays on screen surfaces. It delivers a high X-ray light yield of 16,840 photons/MeV, with a low detection limit of 135 nGy/s, and achieves an exceptional X-ray imaging spatial resolution of 25 lp/mm. Furthermore, the (MTP)2MnBr4 single crystal grown via low-temperature evaporation shows remarkable retention of radioluminescence intensity and an exceptional light yield of 60,790 photons/MeV. This approach combines low toxicity, ease of processing, scalability, low detection limit, significant light yield, and high spatial resolution, making it suitable for widespread adoption in various X-ray applications.