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%0 Thesis
%A Schneider, Daniel Stefan
%T Flexible two‑dimensional/three‑dimensional material based photodetectors
%I Rheinisch-Westfälische Technische Hochschule Aachen
%V Dissertation
%C Aachen
%M RWTH-2022-09676
%P 1 Online-Ressource : Illustrationen, Diagramme
%D 2021
%Z Veröffentlicht auf dem Publikationsserver der RWTH Aachen University 2022
%Z Dissertation, Rheinisch-Westfälische Technische Hochschule Aachen, 2021
%X 1. Motivation, Goal and Task of the Dissertation Multispectral sensors enable the precise identification of unknown substances, undistorted by the human perception of colors. This makes it possible to carry out contactless and non‑destructive analyses for identification of hazardous substances. Electrically tunable photodetectors based on hydrogenated amorphous silicon (a‑Si:H)are alternatives to image sensors that are based on photodiodes with integrated color filters which are used for such analyses. A specific vertical device structure allows sampling of a wide range of spectral bands in a single photodetector without the need for optical filters. The integration of two‑dimensional (2D) materials with interesting electrical, mechanical, and optical properties, such as graphene and (molybdenum disulfide (MoS₂) into the multispectral sensors, opens the opportunity to extend the wavelength responsivity of these devices. This can overcome a significant limitation of silicon technology which primarily detects the visible region. As part of this PhD thesis, hybrid photodetectors based on 2D/3D heterostructures were simulated, fabricated, and characterized. Monolayer MoS₂ offers high absorptions of up to 10
%F PUB:(DE-HGF)11
%9 Dissertation / PhD Thesis
%R 10.18154/RWTH-2022-09676
%U https://publications.rwth-aachen.de/record/854625