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Broadband high photoresponse from pure monolayer graphene photodetector
2013
Nature Communications
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To the best of our knowledge, this work demonstrates the broadest photoresponse with high photoresponsivity from pure monolayer graphene photodetectors, proving the potential of graphene as a promising ...
In addition, broadband photoresponse with high photoresponsivity from the visible to the mid-infrared is experimentally demonstrated. ...
This work is supported by the grant (M58040017) from Nanyang Technological University (NTU), and partially by the Ministry of Education, Singapore (MOE2011-T2-2-147 and MOE2011-T3-1-005). ...
doi:10.1038/ncomms2830
pmid:23651999
fatcat:wnn5pjcjljga7nmecnn7tg4ja4
Single-Walled Carbon Nanotube-Germanium Heterojunction for High-Performance Near-Infrared Photodetector
2022
Nanomaterials
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In this research, we report on a high-performance near-infrared (near-IR) photodetector based on single-walled carbon nanotube-germanium (SWCNT-Ge) heterojunction by assembling SWCNT films onto n-type ...
The ozone doping enhances the conductivity of carbon nanotube films and the formed interfacial oxide layer (GeOx) suppresses the leakage current and carriers' recombination. ...
Ding from Nanjing University of Science and Technology and J. Liu from Qian Xuesen Laboratory of Space Technology for their helpful discussions. ...
doi:10.3390/nano12081258
pmid:35457966
pmcid:PMC9024978
fatcat:vuwxu6j2rjbsnnukbpyiewl4m4
Broad-Spectral-Response Nanocarbon Bulk-Heterojunction Excitonic Photodetectors
2013
Advanced Materials
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The latter is several times higher than polymer-based (≈ 4 × 10 10 Jones at 500 nm) and carbon nanotube/organic-semiconductor-based photodetectors (≈ 3 × 10 10 Jones at 500 nm). ...
Atomic Force Microscopy (AFM) A Digital Instruments LFM-2 AFM/SPM microscope was used to take the AFM image of the nanocarbon blend film (Silicon probes: nanoScience Instruments, Vista Probes, CLR-25). ...
doi:10.1002/adma.201300292
pmid:23716366
pmcid:PMC4104188
fatcat:35amkvglxjee3ftigsunzx7ysm
Phonon-enhanced photothermoelectric effect in SrTiO3 ultra-broadband photodetector
2019
Nature Communications
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The high performance of r-STO PTE photodetector is attributed to its intrinsic high Seebeck coefficient and phonon-enhanced photoresponse in the long wavelength infrared region. ...
The sensitivity of PTE photodetectors is determined by the Seebeck coefficient and the rising temperature under illumination. ...
This trend is consistent with that of carbon nanotube PTE detectors 42 , due to the larger temperature gradient for longer channel length. ...
doi:10.1038/s41467-018-07860-0
fatcat:cjhckxryt5hbfmbt7yg5oiw4fi
Scalable Production of Graphene/Semiconducting Single-Wall Carbon Nanotube Film Schottky Broadband Photodiode Array with Enhanced Photoresponse
2018
Applied Sciences
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The as-fabricated carbon-based photodiode presented an ultra-broadband photodetection characteristic with a high responsivity of 1.75 A/W at near-infrared wavelengths and a fast response rise time of 15 ...
A general approach was developed to fabricate graphene/semiconducting single-wall carbon nanotube (graphene/s-SWCNT) film Schottky junctions on a large scale. ...
Acknowledgments: Part of the experimental work was carried out at the Fudan Nanofabrication Laboratory.
Conflicts of Interest: The authors declare no conflicts of interest. ...
doi:10.3390/app8122369
fatcat:vl2tq3b5rjhdhii4rxsjqkezpm
Ultrafast carbon nanotube photodetectors with bandwidth over 60 GHz
[article]
2022
arXiv
pre-print
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Here, we demonstrate a CMOS-compatible carbon nanotube (CNT) photodetector that exhibits high responsivity, high bandwidth and broad spectral operation over all optical telecommunication band based on ...
As the CNT photodetectors are fabricated by doping-free process, it also provides a cost-effective solution to integrate CNT photonic devices with CNT-based CMOS integrated circuits. ...
Carbon nanotube computer based on complexed CNT circuits has been demonstrated recently [27] [28] [29] . ...
arXiv:2206.12162v2
fatcat:4ncjgf67mja3nfcrj76mks7ebm
Nanohybrid Photodetectors
2021
Advanced Photonics Research
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Using nanohybrid photodetectors as an example, the importance in controlling the heterojunction interfaces and multiscale controlling of optoelectronic process of light absorption, exciton dissociation ...
heterojunction interfaces that play a critical role in the functionality and performance of the nanohybrids-based devices. ...
Acknowledgements The authors acknowledge support in part by US ARO contract W911NF-16-1-0029 and US NSF contracts NSF-DMR-1508494, NSF-ECCS-1809293, and 1909292. ...
doi:10.1002/adpr.202100015
fatcat:net247wovnfz5p4pd7ec6agjia
Uncooled Carbon Nanotube Photodetectors
2015
Advanced Optical Materials
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In particular, carbon-based nanomaterials such as carbon nanotubes (CNTs) and graphene possess unique properties that have recently been explored for photodetectors. ...
While a number of materials have been used over the past several decades to address photodetection needs across the electromagnetic spectrum, the advent of nanomaterials opens new possibilities for photodetectors ...
X.H. and J.K. were supported by DOE BES DE-FG02-06ER46308 (preparation and teraherz/infrared characterization of aligned carbon nanotubes) and the Robert A. Welch Foundation Grant No. ...
doi:10.1002/adom.201500237
fatcat:t3ucay3hsbb3hld6tzjud4vzxm
Gate-tunable carbon nanotube-MoS2 heterojunction p-n diode
2013
Proceedings of the National Academy of Sciences of the United States of America
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Here, we demonstrate a gate-tunable p-n heterojunction diode using semiconducting single-walled carbon nanotubes (s-SWCNTs) and single-layer molybdenum disulfide (SL-MoS2) as p-type and n-type semiconductors ...
This heterojunction diode also responds strongly to optical irradiation with an external quantum efficiency (EQE) of 25 diverse range of electrical properties as a function of chirality, and since an increasing ...
The authors declare no conflict of interest. 1 To whom correspondence may be addressed. E-mail: t-marks@northwestern.edu or m-hersam@northwestern.edu. ...
doi:10.1073/pnas.1317226110
pmid:24145425
pmcid:PMC3831469
fatcat:za3yoxdgxrgjjn5ilsvlodaxte
Forward-bias diode parameters, electronic noise, and photoresponse of graphene/silicon Schottky junctions with an interfacial native oxide layer
2015
Journal of Applied Physics
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From the photoresponse and noise measurements, the bandwidth is extracted to be $1 kHz and the normalized detectivity is calculated to be 1:2 Â 10 9 cm Hz 1/2 W À1 . ...
The dependence of the 1/f noise on the forward and reverse current is also investigated. Finally, the photoresponse of graphene/silicon Schottky junctions is studied. ...
The bandwidth of the photodetector was extracted to be $1 kHz from the measurements of the relative photoresponse spectrum using an optical chopper. ...
doi:10.1063/1.4931142
fatcat:fephm3lh5ner5eswsew7tqhdsa
Surface-Modified Graphene for Mid-Infrared Detection
[chapter]
2017
Graphene Materials - Advanced Applications
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The properties of unmodified graphene photodetectors were also measured so as to compare with modified graphene photodetectors. ...
Moreover, the sensitivity of photodetectors based on modified graphene was significantly improved. ...
In addition, another salient weakness of graphene's application appears in the designing of transistor-based digital circuits [19] . ...
doi:10.5772/67490
fatcat:6ivfrmqqdjfp3jgpaehcgsldyq
Flexible Photodetectors Based on 1D Inorganic Nanostructures
2015
Advanced Science
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This article offers a comprehensive review of several types of fl exible photodetectors based on 1D nanostructures from the past ten years, including fl exible ultraviolet, visible, and infrared photodetectors ...
of opportunities and capabilities for use in fl exible photodetectors as they have unique geometry, good transparency, outstanding mechanical fl exibility, and excellent electronic/ optoelectronic properties ...
Carbon nanotubes (CNTs) have been extensively studied as electronic, photoelectronic, and piezoresistance materials. ...
doi:10.1002/advs.201500287
pmid:27774404
pmcid:PMC5064608
fatcat:llfybkgjozcunee53pezbspvu4
Bidirectional mid-infrared communications between two identical macroscopic graphene fibres
2020
Nature Communications
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AbstractAmong light-based free-space communication platforms, mid-infrared (MIR) light pertains to important applications in biomedical engineering, environmental monitoring, and remote sensing systems ...
Integrating MIR generation and reception in a network using two identical devices is vital for the miniaturization and simplification of MIR communications. ...
Extremely slow cooling in the order of 100 μs have been recorded in carbon-based systems such as carbon nanotubes (CNTs) and graphite that are limited by the weak thermal dissipation channels and low heat ...
doi:10.1038/s41467-020-20033-2
pmid:33311483
fatcat:opg7rgvqizhwtg3fjcsz2k6lvi
Infrared spectra of individual semiconducting single-walled carbon nanotubes: Testing the scaling of transition energies for large diameter nanotubes
2010
Physical Review B
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We have measured the low-energy excitonic transitions of chiral assigned individual large-diameter semiconducting single-walled nanotubes using a high-resolution Fourier transform photoconductivity technique ...
We find that well-established energy scaling relations developed for nanotubes of smaller diameter are not consistent with the measured low-energy transitions in large ͑1.8-2.3 nm͒ diameter nanotubes. ...
In particular, we assess the applicability of widely applied formalism based on zone folding of the graphene bands with many-body corrections to the measured infrared exciton transitions. ...
doi:10.1103/physrevb.82.195424
fatcat:y35xgqoew5c4zdavy7dusv7njq
Silicon/2D-material photodetectors: from near-infrared to mid-infrared
2021
Light: Science & Applications
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AbstractTwo-dimensional materials (2DMs) have been used widely in constructing photodetectors (PDs) because of their advantages in flexible integration and ultrabroad operation wavelength range. ...
In this work, a review is given for the recent progresses of Si/2DM PDs working in the wavelength band from near-infrared to mid-infrared, which are attractive for many applications. ...
Right: the NEP and thermal relaxation time of hot electrons as a function of lattice temperature. c A metal-graphene+X-metal configuration PD, for which X is carbon nanotube. d A short-wave infrared graphene ...
doi:10.1038/s41377-021-00551-4
pmid:34108443
pmcid:PMC8190178
fatcat:nzoded23lbaw3lzwetxeb22sfq
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