Nanocrystals of metal halide perovskites and their analogues as scintillators for x-ray detection

Abstract

Scintillators are widely used for X-ray detection in various fields, such as medical diagnostics, industrial inspection and homeland security. Nanocrystals of metal halide perovskites and their analogues showed great advantages as X-ray scintillators due to their cheap manufacturing, fast decay time, and room temperature scintillation from quantum confinement effect. However, there are still many challenges unsolved for further industrialization. Herein, it is necessary to summarize the progress of scintillators based on nanocrystals of metal halide perovskites and their analogues. In first section, the scintillation mechanism and key parameters are outlined. Then, various nanocrystals of metal halide perovskites and their analogues used as scintillators are reviewed. Finally, the challenges and outlook are discussed. It is believed that nanocrystals of metal halide perovskites and their analogues are favorable for large-area and flexible X-ray detectors.

Applications of halide perovskites in X-ray detection and imaging

“…The X-ray scintillation performance of nanocrystals of metal halide perovskites and their analogues was reviewed. 88 Surely, combining these technologies will lead to more efficient X-ray detection ability. Before application in X-ray detection, a tremendous amount of research work still needs to be done, despite great achievements in this area until now.…”

Design Rules for Obtaining Narrow Luminescence from Semiconductors Made in Solution

“…On the heels of 3D bulk metal–halide perovskites, solution-processed nanocrystal analogues (MHP nanocrystals) have made a similarly explosive entrance to the field of nanotechnology for conventional and quantum optoelectronics within the past decade. The volume of research activity on MHP nanocrystals prompted us to defer to numerous reviews, all published since 2019, that detail the current states of MHP nanocrystal synthesis, , characterization, stability, − doping, shelling and heterostructures, , self-assembly, encapsulation, device applications, − and more, − with a particularly comprehensive review of the MHP nanocrystal state-of-the-art published in 2021 . Here, we aim to present the major considerations for achieving bright, efficient, and narrow emission from nanoscale ABX 3 structures synthesized in solution.…”

Design rules for obtaining narrow luminescence from semiconductors made in solution

“…On the heels of 3D bulk metal-halide perovskites, solution-processed nanocrystal analogues (MHP nanocrystals) have made a similarly explosive entrance to the field of nanotechnology for conventional and quantum optoelectronics within the last decade. The volume of research activity on MHP nanocrystals prompts us to defer to numerous reviews, all published since 2019, that detail the current states of MHP nanocrystal synthesis, 491,492 characterization, 493 stability, [494][495][496][497] doping, 498 heterostructures, 499 selfassembly, 500 encapsulation, 501 device applications, [502][503][504][505][506][507] and more, [508][509][510][511][512] with a particularly comprehensive review of the MHP nanocrystal state-of-the-art published in 2021. 513 Here, we aim to present the major considerations for achieving bright, efficient, and narrow emission from nanoscale ABX3 structure synthesized in solution.…”