Te4+-doped Cs2SnCl6 scintillator for flexible and efficient X-ray imaging screens

• Published in: Journal of materials chemistry. C, Materials for optical and electronic devices Vol. 12; no. 6; pp. 2241 - 2246
• Main Authors: Wang, Mengyao, Qing, Xiaofei, Du, Tianyun, Wu, Chuanli, Han, Xiuxun
• Format: Journal Article
• Language: English
• Published: Cambridge Royal Society of Chemistry 08.02.2024
• Subjects: High resolution; Medical imaging; Perovskites; Scintillation counters; Screens; X ray imagery; X ray irradiation
• ISSN: 2050-7526; 2050-7534
• DOI: 10.1039/d3tc03818a

The rising demand for X-ray imaging technologies in medical radiography and nondestructive detection calls for novel scintillator materials, particularly those which are cost effective, high resolution, and have a low detection limit. Here we report investigations into the scintillating behavior of vacancy-ordered double perovskite Cs2SnCl6 fabricated via a simple co-precipitation process. By introducing Te4+ doping, an intense yellow emission was achieved upon X-ray irradiation. Combined with PDMS, flexible imaging screens with tunable size and thickness could be obtained, and demonstrated a high resolution of 20 LP mm−1, a low detection limit of 132 nGyair s−1, and high X-ray radiation endurance. Its excellent flexibility enables clear and less vignetted X-ray imaging for nonplanar subjects. The findings open a new avenue towards versatile applications for Sn-based vacancy-ordered double perovskites for other than visible and near-infrared emissions.