Characterization of Carbon nanotubes Near- Infrared Photoconductive Detector

Carbon nanotubes (MWCNTs,F-MWCNTs,SWCNTs) with different structure were fabricated into near-infrared photodetectors. Indium Tin Oxide (ITO) was used as a substrate toÂ deposit CNTsÂ by the drop casting method. The CNTs carrier concentrations, conductivity and carrier mobility were measured. Different types CNTs photodetectors exhibit a good photoconductive performance at a wavelength (980-1200nm) especially SWCNTs, responsivityÂ was found to be (0.295 A W-1 ), specific detectivity (D*) 1Ã—109 cm.Hz1/2 .W-1 and response time 0.049ns.Â

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SEMICONDUCTING CARBON NANOTUBE PHOTOVOLTAIC PHOTODETECTORS

International Journal of High Speed Electronics and Systems ◽

10.1142/s0129156411006970 ◽

2011 ◽

Vol 20 (03) ◽

pp. 687-695 ◽

Cited By ~ 9

Author(s):

DOMINICK J. BINDL ◽

MICHAEL S. ARNOLD

Keyword(s):

Carbon Nanotubes ◽

Tin Oxide ◽

Indium Tin Oxide ◽

Near Infrared ◽

Series Resistance ◽

Single Walled Carbon Nanotubes ◽

Infrared Band ◽

Device Architecture ◽

Heterojunction Device ◽

Walled Carbon Nanotubes

A photovoltaic photodetector harnessing near infrared band gap absorption by thin films of post-synthetically sorted semiconducting single walled carbon nanotubes ( s -SWCNTs) is described. Peak specific detectivity of 6×1011 Jones at -0.1 V bias at 1210 nm is achieved using a heterojunction device architecture: indium tin oxide/ ca. 5 nm s -SWCNT / 120 nm C60 / 10 nm 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP) / Ag. The photodiodes are characterized by a series resistance of 2.9 Ω cm2 and a rectification ratio of 104 at ±1V. These results are expected to guide the exploration of new classes of solution-processable, mechanically flexible, integrable, thin film photovoltaic photodetectors with tunable sensitivity in the visible and infrared spectra based on semiconducting carbon nanotubes.

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Synthesis and characterization of carbon nanotube\iron oxide hybrids

MRS Proceedings ◽

10.1557/opl.2012.771 ◽

2012 ◽

Vol 1387 ◽

Author(s):

Lígia P. Souza ◽

Thais M. Ferreira ◽

Juliana R. Franco ◽

Sergio de Oliveira ◽

Viviany Geraldo ◽

...

Keyword(s):

Carbon Nanotubes ◽

Tin Oxide ◽

Indium Tin Oxide ◽

Treatment Duration ◽

Solvothermal Method ◽

Synthesis And Characterization ◽

Reaction Parameters ◽

Oxide Substrates ◽

Synthesis Of Carbon Nanotubes

ABSTRACTIn this work, the synthesis of carbon nanotubes/hematite hybrids was investigated. The hybrids were produced by solvothermal method and a systematic study exploring different reaction parameters such as treatment duration, temperature and solvent was performed. Results from different characterization techniques demonstrate that the CNTs were effectively decorated with hematite (α-Fe2O3). The size and concentration of the NPs varies with the reaction parameters and the smallest obtained NPs have ∼100 nm diameter. It was demonstrated that translucent and homogeneous thin films made of the resulting hybrid material can be deposited on indium-tin oxide substrates by electrophoretic deposition or by vaccum filtration.

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Nanotechnologies. Characterization of single-wall carbon nanotubes using ultraviolet-visible-near infrared (UV-Vis-NIR) absorption spectroscopy

10.3403/30175309u ◽

2015 ◽

Keyword(s):

Carbon Nanotubes ◽

Absorption Spectroscopy ◽

Near Infrared ◽

Single Wall Carbon Nanotubes ◽

Single Wall Carbon ◽

Nir Absorption

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Optical Absorption Spectroscopy of DNA-Wrapped HiPco Carbon Nanotubes

Materials Science Forum ◽

10.4028/www.scientific.net/msf.943.95 ◽

2019 ◽

Vol 943 ◽

pp. 95-99

Author(s):

Li Jun Wang ◽

Kazuo Umemura

Keyword(s):

Carbon Nanotubes ◽

Aqueous Solution ◽

Optical Absorption ◽

Absorption Spectroscopy ◽

Near Infrared ◽

Nir Spectroscopy ◽

Optical Characterization ◽

Optical Absorption Spectroscopy ◽

Double Stranded Dna

Optical absorption spectroscopy provides evidence for individually dispersed carbon nanotubes. A common method to disperse SWCNTs into aqueous solution is to sonicate the mixture in the presence of a double-stranded DNA (dsDNA). In this paper, optical characterization of dsDNA-wrapped HiPco carbon nanotubes (dsDNA-SWCNT) was carried out using near infrared (NIR) spectroscopy and photoluminescence (PL) experiments. The findings suggest that SWCNT dispersion is very good in the environment of DNA existing. Additionally, its dispersion depends on dsDNA concentration.

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