UV light emitting transparent conducting tin-doped indium oxide (ITO) nanowires

J. Gao; R. Chen; D. H. Li; L. Jiang; J. C. Ye; X. C. Ma; X. D. Chen; Q. H. Xiong; H. D. Sun; T. Wu

doi:10.1088/0957-4484/22/19/195706

UV light emitting transparent conducting tin-doped indium oxide (ITO) nanowires

J. Gao, R. Chen, D. H. Li, L. Jiang, J. C. Ye, X. C. Ma, X. D. Chen, Q. H. Xiong, H. D. Sun, T. Wu^*

^*Corresponding author for this work

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

111 Scopus citations

Abstract

Multifunctional single crystalline tin-doped indium oxide (ITO) nanowires with tuned Sn doping levels are synthesized via a vapor transport method. The Sn concentration in the nanowires can reach 6.4at.% at a synthesis temperature of 840 °C, significantly exceeding the Sn solubility in ITO bulks grown at comparable temperatures, which we attribute to the unique feature of the vapor-liquid-solid growth. As a promising transparent conducting oxide nanomaterial, layers of these ITO nanowires exhibit a sheet resistance as low as and measurements on individual nanowires give a resistivity of 2.4 × 10^-4Ωcm with an electron density up to 2.6 × 10 ²⁰cm^-3, while the optical transmittance in the visible regime can reach ∼ 80%. Under the ultraviolet excitation the ITO nanowire samples emit blue light, which can be ascribed to transitions related to defect levels. Furthermore, a room temperature ultraviolet light emission is observed in these ITO nanowires for the first time, and the exciton-related radiative process is identified by using temperature-dependent photoluminescence measurements.

Original language	English (US)
Article number	195706
Journal	Nanotechnology
Volume	22
Issue number	19
DOIs	https://doi.org/10.1088/0957-4484/22/19/195706
State	Published - May 13 2011
Externally published	Yes

ASJC Scopus subject areas

Bioengineering
General Chemistry
General Materials Science
Mechanics of Materials
Mechanical Engineering
Electrical and Electronic Engineering

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title = "UV light emitting transparent conducting tin-doped indium oxide (ITO) nanowires",

abstract = "Multifunctional single crystalline tin-doped indium oxide (ITO) nanowires with tuned Sn doping levels are synthesized via a vapor transport method. The Sn concentration in the nanowires can reach 6.4at.% at a synthesis temperature of 840 °C, significantly exceeding the Sn solubility in ITO bulks grown at comparable temperatures, which we attribute to the unique feature of the vapor-liquid-solid growth. As a promising transparent conducting oxide nanomaterial, layers of these ITO nanowires exhibit a sheet resistance as low as and measurements on individual nanowires give a resistivity of 2.4 × 10-4Ωcm with an electron density up to 2.6 × 10 20cm-3, while the optical transmittance in the visible regime can reach ∼ 80%. Under the ultraviolet excitation the ITO nanowire samples emit blue light, which can be ascribed to transitions related to defect levels. Furthermore, a room temperature ultraviolet light emission is observed in these ITO nanowires for the first time, and the exciton-related radiative process is identified by using temperature-dependent photoluminescence measurements.",

author = "J. Gao and R. Chen and Li, {D. H.} and L. Jiang and Ye, {J. C.} and Ma, {X. C.} and Chen, {X. D.} and Xiong, {Q. H.} and Sun, {H. D.} and T. Wu",

year = "2011",

month = may,

day = "13",

doi = "10.1088/0957-4484/22/19/195706",

language = "English (US)",

volume = "22",

journal = "Nanotechnology",

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T1 - UV light emitting transparent conducting tin-doped indium oxide (ITO) nanowires

AU - Gao, J.

AU - Chen, R.

AU - Li, D. H.

AU - Jiang, L.

AU - Ye, J. C.

AU - Ma, X. C.

AU - Chen, X. D.

AU - Xiong, Q. H.

AU - Sun, H. D.

AU - Wu, T.

PY - 2011/5/13

Y1 - 2011/5/13

N2 - Multifunctional single crystalline tin-doped indium oxide (ITO) nanowires with tuned Sn doping levels are synthesized via a vapor transport method. The Sn concentration in the nanowires can reach 6.4at.% at a synthesis temperature of 840 °C, significantly exceeding the Sn solubility in ITO bulks grown at comparable temperatures, which we attribute to the unique feature of the vapor-liquid-solid growth. As a promising transparent conducting oxide nanomaterial, layers of these ITO nanowires exhibit a sheet resistance as low as and measurements on individual nanowires give a resistivity of 2.4 × 10-4Ωcm with an electron density up to 2.6 × 10 20cm-3, while the optical transmittance in the visible regime can reach ∼ 80%. Under the ultraviolet excitation the ITO nanowire samples emit blue light, which can be ascribed to transitions related to defect levels. Furthermore, a room temperature ultraviolet light emission is observed in these ITO nanowires for the first time, and the exciton-related radiative process is identified by using temperature-dependent photoluminescence measurements.

AB - Multifunctional single crystalline tin-doped indium oxide (ITO) nanowires with tuned Sn doping levels are synthesized via a vapor transport method. The Sn concentration in the nanowires can reach 6.4at.% at a synthesis temperature of 840 °C, significantly exceeding the Sn solubility in ITO bulks grown at comparable temperatures, which we attribute to the unique feature of the vapor-liquid-solid growth. As a promising transparent conducting oxide nanomaterial, layers of these ITO nanowires exhibit a sheet resistance as low as and measurements on individual nanowires give a resistivity of 2.4 × 10-4Ωcm with an electron density up to 2.6 × 10 20cm-3, while the optical transmittance in the visible regime can reach ∼ 80%. Under the ultraviolet excitation the ITO nanowire samples emit blue light, which can be ascribed to transitions related to defect levels. Furthermore, a room temperature ultraviolet light emission is observed in these ITO nanowires for the first time, and the exciton-related radiative process is identified by using temperature-dependent photoluminescence measurements.

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DO - 10.1088/0957-4484/22/19/195706

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SN - 0957-4484

VL - 22

JO - Nanotechnology

JF - Nanotechnology

IS - 19

M1 - 195706

ER -

UV light emitting transparent conducting tin-doped indium oxide (ITO) nanowires

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