December 2021
Spotlight Summary by David Paganin
Enhanced multimodal luminescence and ultrahigh stability Eu3+-doped CsPbBr3 glasses for X-ray detection and imaging
This paper may help make X-ray imaging better, via its study of a material from which X-ray detectors can be made. X-rays are challenging to detect efficiently, particularly at the very hard end of the energy spectrum. Their ability to penetrate optically-opaque samples, which is so valuable in medical and non-destructive imaging contexts, also makes them "hard to catch." Observe the trade-off: X-rays interact sufficiently weak enough to pass through matter that blocks lower-energy photons, but upon transmission through a sample, the X-ray photons are liable to see your detector as semi-transparent too! From a more fundamental perspective, there are physical limitations at work here. It is hard to make pixel-sized chunks of matter absorb X-ray photons to any appreciable degree; then there is the question of robustness with respect to radiation damage, so it goes on. There is plenty of room for improvement in X-ray imaging detectors. The problem is important, and this paper on perovksite glass scintillators may well take us towards genuine improvements in this space.
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Article Information
Enhanced multimodal luminescence and ultrahigh stability Eu3+-doped CsPbBr3 glasses for X-ray detection and imaging
Yao Tong, Qin Wang, Heng Yang, Xiaoting Liu, Enrou Mei, Xiaojuan Liang, Zhijun Zhang, and Weidong Xiang
Photon. Res. 9(12) 2369-2380 (2021) View: Abstract | HTML | PDF