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Graphene-Insulator-Semiconductor Junction for Hybrid Photodetection Modalities

Journal Article · · Scientific Reports

A sensitive optical detector is presented based on a deeply depleted graphene-insulator-semiconducting (D2GIS) junction, which offers the possibility of simultaneously leveraging the advantages of both charge integration and localized amplification. Direct read-out and built-in amplification are accomplished via photogating of a graphene field-effect transistor (GFET) by carriers generated within a deeply depleted low-doped silicon substrate. Analogous to a depleted metal-oxide-semiconducting junction, photo-generated charge collects in the potential well that forms at the semiconductor/insulator interface and induces charges of opposite polarity within the graphene film modifying its conductivity. This device enables simultaneous photo-induced charge integration with continuous “on detector” readout through use of graphene. The resulting devices exhibit responsivities as high as 2,500 A/W (25,000 S/W) for visible wavelengths and a dynamic range of 30 dB. As both the graphene and device principles are transferrable to arbitrary semiconductor absorbers, D2GIS devices offer a high-performance paradigm for imaging across the electromagnetic spectrum

Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States). Center for Integrated Nanotechnologies (CINT) )
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Laboratory Directed Research and Development (LDRD) Program
Grant/Contract Number:
NA0003525
OSTI ID:
1624359
Journal Information:
Scientific Reports, Journal Name: Scientific Reports Journal Issue: 1 Vol. 7; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

References (26)

Infrared Photodetectors Based on CVD-Grown Graphene and PbS Quantum Dots with Ultrahigh Responsivity journal August 2012
Oxygen-Assisted Charge Transfer Between ZnO Quantum Dots and Graphene journal March 2013
Hybrid graphene–quantum dot phototransistors with ultrahigh gain journal May 2012
Photodetectors based on graphene, other two-dimensional materials and hybrid systems journal October 2014
A highly sensitive ultraviolet sensor based on a facile in situ solution-grown ZnO nanorod/graphene heterostructure journal January 2011
Ultrafast Optical-Pump Terahertz-Probe Spectroscopy of the Carrier Relaxation and Recombination Dynamics in Epitaxial Graphene text January 2008
Intrinsic response time of graphene photodetectors text January 2011
Physics of Semiconductor Devices book January 2007
Mid-Infrared Pyroresistive Graphene Detector on LiNbO 3 journal December 2016
Intrinsic Response Time of Graphene Photodetectors journal July 2011
High-Responsivity Mid-Infrared Graphene Detectors with Antenna-Enhanced Photocarrier Generation and Collection journal June 2014
Ultrafast Optical-Pump Terahertz-Probe Spectroscopy of the Carrier Relaxation and Recombination Dynamics in Epitaxial Graphene journal December 2008
Integrating an electrically active colloidal quantum dot photodiode with a graphene phototransistor journal June 2016
Strong plasmonic enhancement of photovoltage in graphene journal August 2011
Time-resolved ultrafast photocurrents and terahertz generation in freely suspended graphene journal January 2012
Single-step deposition of high-mobility graphene at reduced temperatures journal March 2015
Dual-gated bilayer graphene hot-electron bolometer journal June 2012
Graphene photodetectors with ultra-broadband and high responsivity at room temperature journal March 2014
Highly sensitive hot electron bolometer based on disordered graphene journal December 2013
A highly sensitive ultraviolet sensor based on a facile in situ solution-grown ZnO nanorod/graphene heterostructure journal January 2011
Mobility and saturation velocity in graphene on SiO2 journal August 2010
Doping Graphene with Metal Contacts journal July 2008
Passivation Properties of Atomic-Layer-Deposited Hafnium and Aluminum Oxides on Si Surfaces journal February 2012
Graphene Field-Effect Transistors on Undoped Semiconductor Substrates for Radiation Detection journal May 2012
Ultrahigh-mobility graphene devices from chemical vapor deposition on reusable copper journal July 2015
High-performance graphene photodetector using interfacial gating journal January 2016

Cited By (1)

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Figures / Tables (5)