Synthesis and characterization of tin oxide microfibres electrospun from a simple precursor solution

Wang, Yu; Aponte, Milca; Leon, Neliza; Ramos, Idalia; Furlan, Rogério; Evoy, Stéphane; Santiago-Avilés, Jorge J.

doi:10.1088/0268-1242/19/8/017

Cited by 35 publications

(42 citation statements)

References 18 publications

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“…[1][2][3][4][5][6][7] However, for many applications such as the line light source or dielectric waveguide, the fiber morphology is more favorable. Unfortunately, so far only a few ways, such as thermal decomposition, 8 template and oxidization, 9 laser ablation or vapor-liquid-solid growth, 10 vapor deposition, 11,12 and electrospinning, [13][14][15] have been developed to fabricate SnO 2 nanofibers or ribbons. Their optical and optoelectronic properties have been only barely touched [10][11][12][13] even though such property characterization is indispensable for their optoelectronic applications.…”

Section: Introductionmentioning

confidence: 99%

Optical bandgap and photoconductance of electrospun tin oxide nanofibers

Wang

Ramos

Santiago-Avilés

2007

Journal of Applied Physics

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Optical and photoconductive properties of transparent SnO 2 nanofibers, made from C 22 H 44 O 4 Sn via electrospinning and metallorganic decomposition, were investigated using Fourier transform infrared and ultraviolet (UV)/visible spectrometry and the two-probe method. Their optical bandgap was determined from their UV absorption edge to be 3.95-4.08 eV. Their conductance responds strongly to UV light for a wavelength of 254 nm: in air its steady-state on-to-off ratios are 1.31-1.56 (rise) and 1.25-1.33 (fall); its 90% rise and fall times are 76-96 and 71-111 s, respectively. In a vacuum of about 10 −4 torr, its on-to-off ratios are higher than 35.6 (rise) and 3.4 (fall), respectively, and its 90% rise and fall times are longer than 3×10 4 s. Keywordsfibres, fourier transform spectra, infrared spectra, nanostructured materials, nanotechnology, nanostructurred materials, optical constants, photoconductivity, pyrolysis, semiconductor growth, semiconductor materials, tin compounds, ultraviolet spectra, visible spectra Optical and photoconductive properties of transparent SnO 2 nanofibers, made from C 22 H 44 O 4 Sn via electrospinning and metallorganic decomposition, were investigated using Fourier transform infrared and ultraviolet ͑UV͒/visible spectrometry and the two-probe method. Their optical bandgap was determined from their UV absorption edge to be 3.95-4.08 eV. Their conductance responds strongly to UV light for a wavelength of 254 nm: in air its steady-state on-to-off ratios are 1.31-1.56 ͑rise͒ and 1.25-1.33 ͑fall͒; its 90% rise and fall times are 76-96 and 71-111 s, respectively. In a vacuum of about 10 −4 torr, its on-to-off ratios are higher than 35.6 ͑rise͒ and 3.4 ͑fall͒, respectively, and its 90% rise and fall times are longer than 3 ϫ 10 4 s.

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Section: Introductionmentioning

confidence: 99%

Optical bandgap and photoconductance of electrospun tin oxide nanofibers

Wang

Ramos

Santiago-Avilés

2007

Journal of Applied Physics

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“…20 A precursor solution containing dimethyldineodecanoate tin, poly͑ethylene oxide͒/water, and chloroform was used to electrospin SnO 2 microfibers. 21 Porous SnO 2 nanobelts have been fabricated by electrospinning and subsequent calcinations in air at various temperatures above 500°C. 22 In this letter, we investigate electrospun SnO 2 /MWCNT nanofibers for room temperature detection of carbon monoxide gas.…”

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Room temperature gas sensing properties of SnO2/multiwall-carbon-nanotube composite nanofibers

Tao

Wang

et al. 2007

Applied Physics Letters

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Pure SnO 2 and SnO 2 polycrystalline nanofibers doped with multiwall carbon nanotubes ͑MWCNTs͒ are synthesized by electrospinning followed by calcination in air at 500°C. The measurement results by sensors fabricated from these fiber mats at steady state show that the n-type SnO 2 /MWCNT nanofibers are able to detect carbon monoxide at 50 ppm at room temperature, while the pure SnO 2 nanofibers are insensitive up to 500 ppm. The MWCNT doped SnO 2 nanofibers have demonstrated their potentials for wearable room temperature gas sensors with low cost and power consumption.

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“…A homogeneous precursor solution with appropriate rheological properties was made from commercial poly (ethylene oxide) (molecular weight 900 000), chloroform, and dimethyldineodecanoate tin in a pertinent ratio. Single precursor fibers were electrospun from the solution using a homemade electrospinning setup [7] onto single-crystal silicon wafers with their surface thermally oxidized and patterned with gold contacts. The as-deposited precursor fibers on the substrates were subsequently isothermally decomposed at 600 in air for 2 h, and finally gold wires were bonded to the contacts, as schematically shown in Fig.…”

Section: Methodsmentioning

confidence: 99%

“…1(b). Our previous characterization showed that the synthesized nanofibers were rutile-structured [7], [8]. The sensor was tested at room temperature, as shown in Fig.…”

Section: Methodsmentioning

confidence: 99%

“…With an even higher ratio 2/r ( is the nanofiber radius, ), nanofibers are expected to have better sensing capabilities (such as higher sensitivity and shorter response time) than thin films. However, nanofibers have been fabricated only recently in a limited number of ways, such as thermal decomposition [3], laser ablation [4], template oxidization [5], vapor deposition [6], and electrospinning [7], even though numerous methods have been developed to deposit thin film [1], [2]. We fabricated nanofibers using electrospinning and metallorganics decomposition (MOD) techniques [7], [8].…”

Section: Introductionmentioning

confidence: 99%

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Detection of Moisture and Methanol Gas Using a Single Electrospun Tin Oxide Nanofiber

2007

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This letter reports the fabrication of a gas sensor based on a single tin oxide nanofiber made from dimethyldineodecanoate tin using electrospinning and metallorganics decomposition techniques. The fabricated sensor has been used to detect moisture and methanol gas. It showed high sensitivity to both gases and the response times of the complete testing system are in the range of 108-150 s for moisture, and 10-38 s for methanol gas, respectively. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Pennsylvania's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.This journal article is available at ScholarlyCommons: http://repository.upenn.edu/ese_papers/309 IEEE SENSORS JOURNAL, VOL. 7, NO. 9, SEPTEMBER 2007 1347 Detection of Moisture and Methanol Gas Using a Single Electrospun Tin Oxide Nanofiber Y. Wang, I. Ramos, and J. J. Santiago-AvilésAbstract-This letter reports the fabrication of a gas sensor based on a single tin oxide nanofiber made from dimethyldineodecanoate tin using electrospinning and metallorganics decomposition techniques. The fabricated sensor has been used to detect moisture and methanol gas. It showed high sensitivity to both gases and the response times of the complete testing system are in the range of 108-150 s for moisture, and 10-38 s for methanol gas, respectively.

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Synthesis and characterization of tin oxide microfibres electrospun from a simple precursor solution

Cited by 35 publications

References 18 publications

Optical bandgap and photoconductance of electrospun tin oxide nanofibers

Optical bandgap and photoconductance of electrospun tin oxide nanofibers

Room temperature gas sensing properties of SnO2/multiwall-carbon-nanotube composite nanofibers

Detection of Moisture and Methanol Gas Using a Single Electrospun Tin Oxide Nanofiber

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