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Article
Title On the use of CdSe scintillating nanoplatelets as time taggers for high-energy gamma detection
Author(s) Turtos, R M (CERN) ; Gundacker, S (CERN ; Milan Bicocca U.) ; Omelkov, S (Tartu, Inst. Phys.) ; Mahler, B (ILM, Lyon) ; Khan, A H (U. Gent (main)) ; Saaring, J (Tartu, Inst. Phys.) ; Meng, Z (ILM, Lyon) ; Vasil'ev, A (SINP, Moscow) ; Dujardin, C (ILM, Lyon) ; Kirm, M (Tartu, Inst. Phys.) Show all 13 authors
Publication 2019
In: npj 2D Mater. Appl. 3 (2019) 37
DOI 10.1038/s41699-019-0120-8
Subject category Detectors and Experimental Techniques
Abstract The technological challenge imposed by the time resolution essential to achieve real-time molecular imaging calls for a new generation of ultrafast detectors. In this contribution, we demonstrate that CdSe-based semiconductor nanoplatelets can be combined with standard scintillator technology to achieve 80 ps coincidence time resolution on a hybrid functional pixel. This result contrasts with the fact that the overall detector light output is considerably affected by the loss of index-light-guiding. Here, we exploit the principle of 511 keV energy sharing between a high-Z, high stopping power bulk scintillator, and a nano-scintillator with sub-1 ns radiative recombination times, aiming at a breakthrough in the combined energy and time resolution performance. This proof-of-concept test opens the way to the design and study of larger size sensors using thin nanocomposite layers able to perform as efficient time taggers in a sampling detector geometry of new generation.
Copyright/License publication: © 2019-2024 The Authors (License: CC-BY-4.0)

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 Record created 2019-10-15, last modified 2022-08-10


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