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Proceedings Paper

Novel hybrid organic-inorganic perovskite detector designs based on multilayered device architectures: simulation and design
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Paper Abstract

Cost effective direct conversion detectors for different photon energies that provide high performance are of fundamental importance in medical diagnosis. Conventional direct conversion detectors typically provide either large area devices with moderate performance at reduced costs or expensive high performance architectures with limited size. In order to investigate the feasibility of highly efficient detectors based on low-cost large area processable hybrid organic-inorganic materials, multilayered device architectures consisting of stacked conversion layers are investigated. For this purpose, models that describe the sensitivity and the detective quantum efficiency are extended to the proposed detector design. This enables to evaluate the performance of multilayered detectors based on scintillator-sensitized organic and polycrystalline perovskite materials. A sensitivity analysis based on various multilayered designs at different photon energies shows significantly higher performance of polycrystalline perovskite conversion layers compared to scintillator-sensitized organic materials. The evaluation of detective quantum efficiencies lead to limitations for the number of stacked layers and enables to deduce design rules based on optimal layout parameters. The comparison with conventional single layer detectors shows competitive performance of multilayered detectors compared to high quality single crystals for all investigated photon energies.

Paper Details

Date Published: 1 March 2019
PDF: 12 pages
Proc. SPIE 10948, Medical Imaging 2019: Physics of Medical Imaging, 109480W (1 March 2019); doi: 10.1117/12.2511739
Show Author Affiliations
Henning Mescher, Karlsruher Institut für Technologie (Germany)
Uli Lemmer, Karlsruher Institut für Technologie (Germany)

Published in SPIE Proceedings Vol. 10948:
Medical Imaging 2019: Physics of Medical Imaging
Taly Gilat Schmidt; Guang-Hong Chen; Hilde Bosmans, Editor(s)

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