Stable Organic‐Inorganic Hybrid Sb(III) Halide Scintillator for Nonplanar Ultra‐Flexible X‐Ray Imaging

• Published in: Advanced functional materials 2025-01, Vol.35 (2), p.n/a
• Main Authors: Meng, Haixing, Li, Ying, Zhang, Fei, Niu, Shifeng, Zhu, Minqi, Shi, Zhifeng, Shen, Guozhen
• Format: Article
• Language: English
• Subjects: Antimony; C38H36P2Sb2Cl8; flexible scintillator screens; Halides; Imaging; Metal halides; Molecular structure; Optical properties; Optoelectronics; Photoluminescence; Scintillation counters; Single crystals; Spatial resolution; Stability; underwater imaging; X‐ray imaging
• ISSN: 1616-301X; 1616-3028
• DOI: 10.1002/adfm.202412597

Flexible scintillator screens with excellent stability and low detection limits are crucial for X‐ray imaging applications. 0D organic metal halide materials have emerged as a strong contender in the scintillator fields, owing to their excellent optical characteristics and simple maneuverability. Herein, high‐quality and large quantities of C38H36P2Sb2Cl8 single crystals are synthesized through a simple solution approach. The prepared single crystals with dimer‐structure [Sb2Cl8]2− exhibit yellow emission with a near‐unity high photoluminescence quantum yield (PLQY) of 99.8%, and possess an exceptional light yield of 41300 photons MeV−1, and a detection limit as low as 45.6 nGyair s−1. On this basis, a large‐size and ultra‐flexible C38H36P2Sb2Cl8 scintillator utilized for X‐ray imaging is prepared by template assembled method, demonstrating a high spatial resolution of 8.15 lp mm−1. The prepared ultra‐flexible scintillator screen can achieve excellent X‐ray imaging even after multiple bending and stretching, which can also provide clear non‐planar X‐ray imaging for irregular objects. In addition, the scintillator shows excellent stability in light, heat, X‐ray irradiation, and water. These results not only expand the optoelectronic application field of organic‐inorganic hybrid antimony halides but also promote the rapid development of efficient ultra‐flexible scintillators. An ultra‐flexible scintillator screen based on C38H36P2Sb2Cl8 is demonstrated. The sample has a novel dimer structure with a near‐unity high photoluminescence quantum yield and good stability. The flexible scintillator screen exhibits excellent scintillation performance and underwater X‐ray imaging ability. Moreover, the scintillator screen has good flexibility, which can be molded into any desired shape to fit the non‐planar object surface.