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.) ; Moreels, I (U. Gent (main)) ; Auffray, E (CERN) ; Lecoq, P (CERN) 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) |