Details

Autor(en) / Beteiligte

• Wang, Xiao
• Shi, Huifang
• Ma, Huili
• Ye, Wenpeng
• Song, Lulu
• Zan, Jie
• Yao, Xiaokang
• Ou, Xiangyu
• Yang, Guohui
• Zhao, Zhu
• Singh, Manjeet
• Lin, Chongyang
• Wang, He
• Jia, Wenyong
• Wang, Qian
• Zhi, Jiahuan
• Dong, Chaomin
• Jiang, Xueyan
• Tang, Yongan
• Xie, Xiaoji
• Yang, Yang (Michael)
• Wang, Jianpu
• Chen, Qiushui
• Wang, Yu
• Yang, Huanghao
• Zhang, Guoqing
• An, Zhongfu
• Liu, Xiaogang
• Huang, Wei

Titel

Organic phosphors with bright triplet excitons for efficient X-ray-excited luminescence

Ist Teil von

• Nature photonics, 2021-03, Vol.15 (3), p.187-192

Ort / Verlag

London: Nature Publishing Group UK

Erscheinungsjahr

2021

Quelle

Nature

Beschreibungen/Notizen

• Materials that exhibit X-ray-excited luminescence have great potential in radiation detection, security inspection, biomedical applications and X-ray astronomy 1 – 5 . However, high-performance materials are almost exclusively limited to ceramic scintillators, which are typically prepared under high temperatures 6 . Herein we report metal-free organic phosphors based on a molecular design that supports efficient triplet exciton harvesting to enhance radioluminescence. These organic scintillators exhibit a detection limit of 33 nGy s –1 , which is 167 times lower than the standard dosage for X-ray medical examination and we demonstrate their potential application in X-ray radiography. These findings provide a fundamental design principle and new route for the creation of promising alternatives to incumbent inorganic scintillators. Furthermore, they offer new opportunities for development of flexible, stretchable X-ray detectors and imagers for non-destructive radiography testing and medical imaging. Organic, metal-free materials that act as efficient X-ray scintillators could bring new opportunities for X-ray imaging.