Fabrication and photovoltaic properties of heterostructured TiO 2 nanowires

Suk In Noh; Dong Won Park; Hee Sang Shim; Hyo Jin Ahn

doi:10.1166/jnn.2012.6287

Fabrication and photovoltaic properties of heterostructured TiO ₂ nanowires

Suk In Noh, Dong Won Park, Hee Sang Shim, Hyo Jin Ahn

Dept. of Materials Science & Engineering

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

One-dimensional heterostructured TiO ₂ nanowires were successfully fabricated by an electrospinning technique and modi?ed by hydrolysis. We investigated their structure, morphology, chemical composition, and optical properties by using the X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and UV-vis spectroscopy. In the case of the photovoltaic performance, the short-circuit current density and cell ef?ciency of the DSSCs employing single TiO ₂ One-dimensional heterostructured TiO ₂ nanowires and heterostructured TiO ₂ nanowires improve from 6.90 to 11.38 mA/cm ² and from 2.56 to 4.29%, respectively. The results show that the photoconversion ef?ciency of the heterostructured TiO nanowires could be improved by more than ∼67% compared to that of the single TiO ₂ nanowires because of the enhanced speci?c surface area that facilitates dye adsorption.

Original language	English
Pages (from-to)	6065-6068
Number of pages	4
Journal	Journal of Nanoscience and Nanotechnology
Volume	12
Issue number	7
DOIs	https://doi.org/10.1166/jnn.2012.6287
State	Published - Jul 2012

Keywords

Electrospinning
Heterostructured Nanowires
Photovoltaic Properties
TiO

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10.1166/jnn.2012.6287

Cite this

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title = "Fabrication and photovoltaic properties of heterostructured TiO 2 nanowires",

abstract = "One-dimensional heterostructured TiO 2 nanowires were successfully fabricated by an electrospinning technique and modi?ed by hydrolysis. We investigated their structure, morphology, chemical composition, and optical properties by using the X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and UV-vis spectroscopy. In the case of the photovoltaic performance, the short-circuit current density and cell ef?ciency of the DSSCs employing single TiO 2 One-dimensional heterostructured TiO 2 nanowires and heterostructured TiO 2 nanowires improve from 6.90 to 11.38 mA/cm 2 and from 2.56 to 4.29%, respectively. The results show that the photoconversion ef?ciency of the heterostructured TiO nanowires could be improved by more than ∼67% compared to that of the single TiO 2 nanowires because of the enhanced speci?c surface area that facilitates dye adsorption.",

keywords = "Electrospinning, Heterostructured Nanowires, Photovoltaic Properties, TiO",

author = "Noh, {Suk In} and Park, {Dong Won} and Shim, {Hee Sang} and Ahn, {Hyo Jin}",

year = "2012",

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AU - Noh, Suk In

AU - Park, Dong Won

AU - Shim, Hee Sang

AU - Ahn, Hyo Jin

PY - 2012/7

Y1 - 2012/7

N2 - One-dimensional heterostructured TiO 2 nanowires were successfully fabricated by an electrospinning technique and modi?ed by hydrolysis. We investigated their structure, morphology, chemical composition, and optical properties by using the X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and UV-vis spectroscopy. In the case of the photovoltaic performance, the short-circuit current density and cell ef?ciency of the DSSCs employing single TiO 2 One-dimensional heterostructured TiO 2 nanowires and heterostructured TiO 2 nanowires improve from 6.90 to 11.38 mA/cm 2 and from 2.56 to 4.29%, respectively. The results show that the photoconversion ef?ciency of the heterostructured TiO nanowires could be improved by more than ∼67% compared to that of the single TiO 2 nanowires because of the enhanced speci?c surface area that facilitates dye adsorption.

AB - One-dimensional heterostructured TiO 2 nanowires were successfully fabricated by an electrospinning technique and modi?ed by hydrolysis. We investigated their structure, morphology, chemical composition, and optical properties by using the X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and UV-vis spectroscopy. In the case of the photovoltaic performance, the short-circuit current density and cell ef?ciency of the DSSCs employing single TiO 2 One-dimensional heterostructured TiO 2 nanowires and heterostructured TiO 2 nanowires improve from 6.90 to 11.38 mA/cm 2 and from 2.56 to 4.29%, respectively. The results show that the photoconversion ef?ciency of the heterostructured TiO nanowires could be improved by more than ∼67% compared to that of the single TiO 2 nanowires because of the enhanced speci?c surface area that facilitates dye adsorption.

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