Transparent Conductive Single-Walled Carbon Nanotube Networks with Precisely Tunable Ratios of Semiconducting and Metallic Nanaotubes

Jeffrey L. Blackburn; Teresa M. Barnes; Matthew C. Beard; Yong Hyun Kim; Robert C. Tenent; Timothy J. McDonald; Bobby To; Timothy J. Coutts; Michael J. Heben

doi:10.1021/nn800200d

Transparent Conductive Single-Walled Carbon Nanotube Networks with Precisely Tunable Ratios of Semiconducting and Metallic Nanaotubes

Jeffrey L. Blackburn, Teresa M. Barnes, Matthew C. Beard, Yong Hyun Kim, Robert C. Tenent, Timothy J. McDonald, Bobby To, Timothy J. Coutts, Michael J. Heben

National Renewable Energy Laboratory

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

310 Scopus Citations

Abstract

We present a comprehensive study of the optical and electrical properties of transparent conductive films made from precisely tuned ratios of metallic and semiconducting single-wall carbon nanotubes. The conductivity and transparency of the SWNT films are controlled by an interplay between localized and delocalized carriers, as determined by the SWNT electronic structure, tube-tube junctions, and intentional and unintentional redox dopants. The results suggest that the main resistance in the SWNT thin films is the resistance associated with tube-tube junctions. Redox dopants are found to increase the delocalized carrier density and transmission probability through intertube junctions more effectively for semiconductor-enriched films than for metal-enriched films. As a result, redox-doped semiconductor-enriched films are more conductive than either intrinsic or redox-doped metal-enriched films.

Original language	American English
Pages (from-to)	1266-1274
Number of pages	9
Journal	ACS Nano
Volume	2
Issue number	6
DOIs	https://doi.org/10.1021/nn800200d https://doi.org/10.1021/nn800200d
State	Published - Jun 2008

NREL Publication Number

NREL/JA-590-43237

Keywords

Carbon nanotubes
Conductivity
Doping
Electrical properties
Optical properties
Photovoltaic
Separation
Thin films

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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title = "Transparent Conductive Single-Walled Carbon Nanotube Networks with Precisely Tunable Ratios of Semiconducting and Metallic Nanaotubes",

abstract = "We present a comprehensive study of the optical and electrical properties of transparent conductive films made from precisely tuned ratios of metallic and semiconducting single-wall carbon nanotubes. The conductivity and transparency of the SWNT films are controlled by an interplay between localized and delocalized carriers, as determined by the SWNT electronic structure, tube-tube junctions, and intentional and unintentional redox dopants. The results suggest that the main resistance in the SWNT thin films is the resistance associated with tube-tube junctions. Redox dopants are found to increase the delocalized carrier density and transmission probability through intertube junctions more effectively for semiconductor-enriched films than for metal-enriched films. As a result, redox-doped semiconductor-enriched films are more conductive than either intrinsic or redox-doped metal-enriched films.",

keywords = "Carbon nanotubes, Conductivity, Doping, Electrical properties, Optical properties, Photovoltaic, Separation, Thin films",

author = "Blackburn, {Jeffrey L.} and Barnes, {Teresa M.} and Beard, {Matthew C.} and Kim, {Yong Hyun} and Tenent, {Robert C.} and McDonald, {Timothy J.} and Bobby To and Coutts, {Timothy J.} and Heben, {Michael J.}",

year = "2008",

month = jun,

doi = "10.1021/nn800200d",

language = "American English",

volume = "2",

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AU - Blackburn, Jeffrey L.

AU - Barnes, Teresa M.

AU - Beard, Matthew C.

AU - Kim, Yong Hyun

AU - Tenent, Robert C.

AU - McDonald, Timothy J.

AU - To, Bobby

AU - Coutts, Timothy J.

AU - Heben, Michael J.

PY - 2008/6

Y1 - 2008/6

N2 - We present a comprehensive study of the optical and electrical properties of transparent conductive films made from precisely tuned ratios of metallic and semiconducting single-wall carbon nanotubes. The conductivity and transparency of the SWNT films are controlled by an interplay between localized and delocalized carriers, as determined by the SWNT electronic structure, tube-tube junctions, and intentional and unintentional redox dopants. The results suggest that the main resistance in the SWNT thin films is the resistance associated with tube-tube junctions. Redox dopants are found to increase the delocalized carrier density and transmission probability through intertube junctions more effectively for semiconductor-enriched films than for metal-enriched films. As a result, redox-doped semiconductor-enriched films are more conductive than either intrinsic or redox-doped metal-enriched films.

AB - We present a comprehensive study of the optical and electrical properties of transparent conductive films made from precisely tuned ratios of metallic and semiconducting single-wall carbon nanotubes. The conductivity and transparency of the SWNT films are controlled by an interplay between localized and delocalized carriers, as determined by the SWNT electronic structure, tube-tube junctions, and intentional and unintentional redox dopants. The results suggest that the main resistance in the SWNT thin films is the resistance associated with tube-tube junctions. Redox dopants are found to increase the delocalized carrier density and transmission probability through intertube junctions more effectively for semiconductor-enriched films than for metal-enriched films. As a result, redox-doped semiconductor-enriched films are more conductive than either intrinsic or redox-doped metal-enriched films.

KW - Carbon nanotubes

KW - Conductivity

KW - Doping

KW - Electrical properties

KW - Optical properties

KW - Photovoltaic

KW - Separation

KW - Thin films

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U2 - 10.1021/nn800200d

DO - 10.1021/nn800200d

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SN - 1936-0851

VL - 2

SP - 1266

EP - 1274

JO - ACS Nano

JF - ACS Nano

IS - 6

ER -

Transparent Conductive Single-Walled Carbon Nanotube Networks with Precisely Tunable Ratios of Semiconducting and Metallic Nanaotubes

Abstract

NREL Publication Number

Keywords

UN SDGs

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