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Hybrid Graphene-quantum Dot Phototransistors With Ultrahigh Gain.
G. Konstantatos, M. Badioli, L. Gaudreau, J. Osmond, M. Bernechea, F. P. García de Arquer, F. Gatti, F. Koppens
Published 2012 · Materials Science, Physics, Medicine
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Graphene is an attractive material for optoelectronics and photodetection applications because it offers a broad spectral bandwidth and fast response times. However, weak light absorption and the absence of a gain mechanism that can generate multiple charge carriers from one incident photon have limited the responsivity of graphene-based photodetectors to ∼10(-2) A W(-1). Here, we demonstrate a gain of ∼10(8) electrons per photon and a responsivity of ∼10(7) A W(-1) in a hybrid photodetector that consists of monolayer or bilayer graphene covered with a thin film of colloidal quantum dots. Strong and tunable light absorption in the quantum-dot layer creates electric charges that are transferred to the graphene, where they recirculate many times due to the high charge mobility of graphene and long trapped-charge lifetimes in the quantum-dot layer. The device, with a specific detectivity of 7 × 10(13) Jones, benefits from gate-tunable sensitivity and speed, spectral selectivity from the short-wavelength infrared to the visible, and compatibility with current circuit technologies.
This paper references
Ultrafast graphene photodetector
F. Xia (2010)
Multilayer Hybrid Films Consisting of Alternating Graphene and Titania Nanosheets with Ultrafast Electron Transfer and Photoconversion Properties
K. Manga (2009)
Photocurrent imaging and efficient photon detection in a graphene transistor.
F. Xia (2009)
Gate-activated photoresponse in a graphene p-n junction.
M. Lemme (2011)
Ultrasensitive solution-cast quantum dot photodetectors
G. Konstantatos (2006)
Graphene photodetectors for high-speed optical communications
T. Müller (2010)
Hot carrier transport and photocurrent response in graphene.
J. C. Song (2011)
Concepts in photoconductivity and allied problems
A. Rose (1963)
Gate dependent photocurrents at a graphene p-n junction
E. Peters (2010)
High‐gain InGaAsP‐InP heterojunction phototransistors
P. D. Wright (1980)
Strong plasmonic enhancement of photovoltage in graphene.
T. Echtermeyer (2011)
Detection of individual gas molecules adsorbed on graphene.
F. Schedin (2007)
Measurement of the optical absorption spectra of epitaxial graphene from terahertz to visible
J. Dawlaty (2008)
Microcavity-Integrated Graphene Photodetector
M. Furchi (2012)
Contact and edge effects in graphene devices.
E. J. H. Lee (2008)
Graphene photonics and optoelectronics
F. Bonaccorso (2010)
Imaging of photocurrent generation and collection in single-layer graphene.
J. Park (2009)
Nanostructured materials for photon detection.
G. Konstantatos (2010)
A high‐gain, high‐bandwidth In0.53Ga0.47As/InP heterojunction phototransistor for optical communications
L. Leu (1991)
Band-like transport, high electron mobility and high photoconductivity in all-inorganic nanocrystal arrays.
J. Lee (2011)
Graphene plasmonics: a platform for strong light-matter interactions.
F. Koppens (2011)
Hole Injection Type InGaAs–InP Near Infrared Photo-FET (HI-FET)
M. Ogura (2010)
Photon-number-discriminating detection using a quantum-dot, optically gated, field-effect transistor
E. Gansen (2007)
Large-Area Synthesis of High-Quality and Uniform Graphene Films on Copper Foils
X. Li (2009)
Complete optical absorption in periodically patterned graphene.
S. Thongrattanasiri (2012)
Large area, few-layer graphene films on arbitrary substrates by chemical vapor deposition.
A. Reina (2009)
Roll-to-roll production of 30-inch graphene films for transparent electrodes.
S. Bae (2010)
Light–matter interaction in a microcavity-controlled graphene transistor
M. Engel (2012)
Wafer-scale synthesis and transfer of graphene films.
Y. Lee (2010)
Boron nitride substrates for high-quality graphene electronics.
C. Dean (2010)
Ultrafast optical-pump terahertz-probe spectroscopy of the carrier relaxation and recombination dynamics in epitaxial graphene.
P. George (2008)
F. Bonaccorso (2010)
Engineering the temporal response of photoconductive photodetectors via selective introduction of surface trap states.
G. Konstantatos (2008)
LASERS, OPTICS, AND OPTOELECTRONICS 3673 Detection of single photons using a field-effect transistor gated by a layer of quantum dots
A. Shields (2000)
Hot Carrier–Assisted Intrinsic Photoresponse in Graphene
N. Gabor (2011)
a platform for strong light–matter interactions
F.H.L. Koppens (2011)
Concepts in Photoconductivity and Allied Problems.
S. McGlynn (1964)
Fabrication of large addition energy quantum dots in graphene
J. Moser (2009)
This paper is referenced by
Electronic structure calculations: the many-body perturbation theory (MBPT)
Luis E. F. Foa Torres (2013)
Opto-électronique de boîtes et puits quantiques colloïdaux - Application au photo-transport
A. Robin (2016)
Chapter 3 Heterogeneous Integration of 2 D Materials and Devices on a Si Platform
A. Nourbakhsh (2018)
Highly Sensitive Graphene–Semiconducting Polymer Hybrid Photodetectors with Millisecond Response Time
P. Chang (2017)
Present advances and perspectives of broadband photo-detectors based on emerging 2D-Xenes beyond graphene
B. Wang (2020)
High-performance photodetector using CsPbBr3 perovskite nanocrystals and graphene hybrid channel
Y. Che (2020)
Dual-band infrared imaging using stacked colloidal quantum dot photodiodes
Xin Tang (2019)
High‐Responsivity Near‐Infrared Photodetector Using Gate‐Modulated Graphene/Germanium Schottky Junction
K. E. Chang (2019)
High-Performance, Room Temperature, Ultra-Broadband Photodetectors Based on Air-Stable PdSe2.
Qijie Liang (2019)
Low-Dimensional Halide Perovskites and Their Advanced Optoelectronic Applications
J. Zhang (2017)
High responsivity phototransistors based on few-layer ReS2 for weak signal detection
E. Liu (2015)
Graphene and PbS quantum dot hybrid vertical phototransistor.
Xiaoxian Song (2017)
Organic Dye Graphene Hybrid Structures with Spectral Color Selectivity
Yu Seong Gim (2016)
Micro- and nano-scale organic light-emitting devices driven by alternating-current voltage
Xuhai Liu (2013)
Photon-triggered nanowire transistors.
J. Kim (2017)
Graphene nanoribbon photodetectors based on an asymmetric potential barrier: a new concept and a new structure
M. Zarei (2018)
High performance PbSe colloidal quantum dot vertical field effect phototransistors.
Haiting Zhang (2016)
Highly photoresponsive charge-sensitive infrared phototransistors with a dynamically controlled optical gate
Jie Xu (2016)
Ultrahigh field enhancement and photoresponse in atomically separated arrays of plasmonic dimers.
Debadrita Paria (2015)
Graphene nanomesh photodetector with effective charge tunnelling from quantum dots.
X. Liu (2015)
Explicit Gain Equations for Single Crystalline Photoconductors.
J. He (2020)
Growth of In2S3 nanolayers on F-Mica, SiO2, ZnO, and TiO2 substrates using chemical vapor deposition
N. Kaur (2021)
Probing the Importance of Charge Balance and Noise Current in WSe2/WS2/MoS2 van der Waals Heterojunction Phototransistors by Selective Electrostatic Doping
Hyun-Soo Ra (2020)
Photoconductivities in MoS2 Nanoflake Photoconductors
Wei-Chu Shen (2016)
MoS2-InGaZnO Heterojunction Phototransistors with Broad Spectral Responsivity.
J. Yang (2016)
High Detectivity from a Lateral Graphene–MoS2 Schottky Photodetector Grown by Chemical Vapor Deposition
Wenjie Deng (2018)
1D Organic–Inorganic Hybrid Perovskite Micro/Nanocrystals: Fabrication, Assembly, and Optoelectronic Applications
Xiuzhen Xu (2018)
Size and pH dependent photoluminescence of graphene quantum dots with low oxygen content
Sung Ho Song (2016)
Assisted Tip Sonication Approach for Graphene Synthesis in Aqueous Dispersion
A. F. Ghanem (2018)
High-performance Ge quantum dot decorated graphene/zinc-oxide heterostructure infrared photodetector.
X. Liu (2015)
PbTe Nanocrystal Arrays on Graphene and the Structural Influence of Capping Ligands
A. Robertson (2014)
Hybrid J-Aggregate–Graphene Phototransistor
Ozan Yakar (2020)See more