2020/05/01 by Qingquan He, Chenkun Zhou, Liang‐Jin Xu +6 · 2 citations
Engineering · Physics and Astronomy · Materials Science · Chemistry · #Perovskite Materials and Applications #Radiation Detection and Scintillator Technologies #Luminescence Properties of Advanced Materials #Radioluminescence #Scintillation #Scintillator #Halide #Quantum yield #Yield (engineering) #Materials science #Photoluminescence #Luminescence #Terbium #Optoelectronics #Analytical Chemistry (journal) #Optics #Chemistry #Inorganic chemistry #Physics #Fluorescence #Organic chemistry #Detector
paper · doi:10.1021/acsmaterialslett.0c00133
openalex publication_date 2020/05/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
Scintillators are utilized for X-ray detection in many important fields ranging from homeland security to health care. Developing low-cost, high-performance scintillation materials to address the issues of existing commercially available ones is of great interest. Recently, organic metal halide hybrids have emerged as highly promising luminescent materials with excellent optical properties and low-temperature solution processability. Herein, we report a zero-dimensional organic metal halide hybrid, (PPN) 2 SbCl 5 (PPN = bis(triphenylphosphoranylidene)ammonium cation), as an X-ray scintillation material with high light yield and exceptional environmental stability. Our study shows that (PPN) 2 SbCl 5 single crystals prepared by solution growth exhibit visible photoluminescence with a quantum efficiency of 98.1%. When excited by X-rays, (PPN) 2 SbCl 5 single crystals exhibit radioluminescence with a near-perfect linearity over a large range of X-ray dose rates and a light yield of ∼49000 ph MeV –1, which is comparable to that of a commercial CsI(Tl) scintillator (∼54000 ph MeV –1 ). Moreover, the detection limit of (PPN) 2 SbCl 5 (191.4 nGy air s –1 ) is much lower than the required value for regular medical diagnostics (5.5 μGy air s –1 ). (PPN) 2 SbCl 5 single crystals also display remarkable stability, with little-to-no change in properties after storage under ambient conditions for 2 years.