Fast MoTe2 Waveguide Photodetector with High Sensitivity at Telecommunication Wavelengths
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Date
2018-05-16
Publication Type
Journal Article
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Abstract
Two-dimensional (2D) materials integrated with planar photonic elements enable a new class of electro-optical components and hold much promise for a novel 2D material integrated circuit technology. Here, we present a few-layer MoTe2 waveguide photodetector that is operable across the entire O-band of the near-infrared optical telecommunication spectral range. The device is realized in a two-terminal in-plane electrode configuration without applying external gating. It features a competitive photoresponsivity of 23 mA/W as well as a low dark current, both of which lead to a highly sensitive photodetection with a large dynamic range. Moreover, the design of the photodetector exhibits a fast photoresponse with a bandwidth approaching 1 GHz, outperforming prior TMDC-based photodetectors. Optical data experiments proved the operation of our device at data rates of 1 Gbit/s, revealing the applicability of integrating 2D materials for practical optical data communication applications.
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published
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Journal / series
Volume
5 (5)
Pages / Article No.
1846 - 1852
Publisher
American Chemical Society
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Edition / version
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Date collected
Date created
Subject
2D materials; optoelectronics; photodetector; silicon photonics; transition-metal dichalcogenide; waveguide
Organisational unit
03944 - Novotny, Lukas / Novotny, Lukas
03974 - Leuthold, Juerg / Leuthold, Juerg
02635 - Institut für Elektromagnetische Felder / Institute of Electromagnetic Fields
Notes
Funding
165841 - Nonlinear optics with hybrid plasmonic-TMDC materials (SNF)