Zn<sup>2+</sup> Doping in Organic Manganese(II) Bromide Hybrid Scintillators toward Enhanced Light Yield for X‐Ray Imaging
Jiance Jin, Kai Han, Yakun Hu, Zhiguo Xia
Abstract
Abstract Metal halide scintillators have drawn great interest for X‐ray imaging; however, it remains challenging to simultaneously achieve a high light yield (LY) and highly sensitive detection. Herein, Zn 2+ is successfully introduced into [TPPen] 2 MnBr 4 (TPPMB, TPPen = pentyltriphenylphosphonium) and the synthesis of [TPPen] 2 Mn 0.9 Zn 0.1 Br 4 (TPPMZB) is designed. The LY increases from 43 000 for TPPMB to 68 000 photons MeV −1 for TPPMZB in virtue of the Zn atom doping. Additionally, the detection limit of TPPMZB is 204.1 nGy s −1 , showing great improvement to that of TPPMB with the value of 696.9 nGy s −1 . X‐ray imaging is realized by utilizing the large‐scale scintillator film fabricated by mixing polydimethylsiloxane with TPPMZB or TPPMB, and the spatial resolution is enlarged from 4.6 to 11.2 lp mm −1 after Zn 2+ ‐doping. This study provides a design principle by doping engineering for enhancing the LY property of metal halide X‐ray scintillators.