Waveguide-integrated black phosphorus photodetector with high responsivity and low dark current

Abstract

Layered two-dimensional materials have shown novel optoelectronic properties and are well suited to be integrated in planar photonic circuits. For example, graphene has been utilized for wideband photodetection. Because graphene lacks a band gap, however, graphene photodetectors suffer from very high dark current. In contrast, layered black phosphorous, the latest addition to the family of 2D materials, is well-suited for photodetector applications due to its narrow but finite band gap. Here, we demonstrate a gated multilayer black phosphorus photodetector integrated on a silicon photonic waveguide operating in the near-infrared telecom band. In a significant advantage over graphene devices, black phosphorus photodetectors can operate under a bias with very low dark current and attain intrinsic responsivity up to 135 mA/W and 657 mA/W in 11.5nm and 100 nm thick devices, respectively, at room temperature. The photocurrent is dominated by the photovoltaic effect with a high response bandwidth exceeding 3 GHz.

15 pages, 4 figures

References in corpus (11)

• Boron nitride substrates for high-quality graphene electronics
• Two-Dimensional Material Nanophotonics
• Graphene photodetectors for high-speed optical communications
• Fast and broadband photoresponse of few-layer black phosphorus field-effect transistors
• Broadband Linear-Dichroic Photodetector in a Black Phosphorus Vertical p-n Junction
• Black Phosphorus-Monolayer MoS2 van der Waals Heterojunction P-N Diode
• Photovoltaic effect in few-layer black phosphorus PN junctions defined by local electrostatic gating
• Tunable optical properties of multilayers black phosphorus thin films
• Photoconductivity of biased graphene
• Black Phosphorus Radio-Frequency Transistors
• Origin of photoresponse in black phosphorus photo-transistors

Cited by in corpus (28)

• Photocurrent generation with two-dimensional van der Waals semiconductors
• Infrared fingerprints of few-layer black phosphorus
• Observation of ballistic avalanche phenomena in nanoscale vertical InSe/BP heterostructures
• Dynamical Evolution of Anisotropic Response in Black Phosphorus under Ultrafast Photoexcitation
• Low-Symmetry Two-Dimensional Materials for Electronic and Photonic Applications
• Franckeite: a naturally occurring van der Waals heterostructure
• Mid-infrared Electro-Optic Modulation in Few-layer Black Phosphorus
• The Optical Properties and Plasmonics of Anisotropic 2-Dimensional Materials
• Field Effect Optoelectronic Modulation of Quantum-Confined Carriers in Black Phosphorus
• Electronic and optical properties of bilayer blue phosphorus
• Mid-infrared time-resolved photoconduction in black phosphorus
• Performance Enhancement of Black Phosphorus Field-Effect Transistors by Chemical Doping
• A Perspective on Recent Advances in Phosphorene Functionalization and its Application in Devices
• Atomic-scale imaging of few-layer black phosphorus and its reconstructed edge
• Dimensionality and Anisotropicity Dependence of Radiative Recombination in Nanostructured Phosphorene
• Room temperature infrared photodetectors with hybrid structure based on 2D materials
• Tailored nano-electronics and photonics with two-dimensional materials at terahertz frequencies
• Excitons in bulk black phosphorus evidenced by photoluminescence at low temperature
• Direct Investigation of the Birefringent Optical Properties of Black Phosphorus with Picosecond Interferometry
• Observation of A${}_g^1$ Raman mode splitting in few layers black phosphorus encapsulated with hexagonal boron nitride
• Layer Tunable Third-Harmonic Generation in Multilayer Black Phosphorus
• Strain-Engineered High Responsivity MoTe2 Photodetector for Silicon Photonic Integrated Circuits
• Interfacial amplification for graphene based position-sensitive-detectors
• Study of Black Phosphorus Using Angle-Resolved Polarized Raman Spectroscopy with 442 nm Excitation
• Spectral responsivity and photoconductive gain in thin film black phosphorus photodetectors
• Roadmap for Gain-Bandwidth-Product Enhanced Photodetectors
• Electrical Control of Linear Dichroism in Black Phosphorus from the Visible to Mid-Infrared
• Mid-Infrared Ultrafast Carrier Dynamics in Thin Film Black Phosphorus