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Title: Optical Characterization of Highly Conductive Single-Wall Carbon-Nanotube Transparent Electrodes

Abstract

We report on a complete characterization of the optical dispersion properties of conducting thin films of single-wall carbon nanotubes (SWCNTs). The films studied exhibit sheet resistances between 50 and 1000 {Omega}/sq and optical transparencies between 65% and 95% on glass and quartz substrates. These films have the potential to replace transparent conducting oxides in applications such as photovoltaics and flat-panel displays; however, their optical properties are not sufficiently well understood. The SWCNT films are shown to be hole conductors, potentially enabling their use as hole-selective contacts and allowing alternative device designs. The fundamental optical, morphological, and electrical characteristics of the films are presented here, and a phenomenological optical model that accurately describes the optical behavior of the films is introduced. Particular attention is paid to ellipsometry measurements and thorough evaluation of the reflection and absorption spectra of the films.

Authors:
; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
939298
DOE Contract Number:  
AC36-99-GO10337
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. B, Condensed Matter and Materials Physics; Journal Volume: 75; Journal Issue: 23, 2007; Related Information: Article No. 235410
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 77 NANOSCIENCE AND NANOTECHNOLOGY; ABSORPTION SPECTRA; CARBON; ELECTRODES; ELLIPSOMETRY; EVALUATION; GLASS; NANOTUBES; OPTICAL DISPERSION; OPTICAL MODELS; OPTICAL PROPERTIES; OXIDES; QUARTZ; REFLECTION; SUBSTRATES; THIN FILMS; Solar Energy - Photovoltaics

Citation Formats

Barnes, T. M., van de Lagemaat, J., Levi, D., Rumbles, G., Coutts, T. J., Weeks, C. L., Britz, D. A., Levitsky, I., Peltola, J., and Glatkowski, P. Optical Characterization of Highly Conductive Single-Wall Carbon-Nanotube Transparent Electrodes. United States: N. p., 2007. Web. doi:10.1103/PhysRevB.75.235410.
Barnes, T. M., van de Lagemaat, J., Levi, D., Rumbles, G., Coutts, T. J., Weeks, C. L., Britz, D. A., Levitsky, I., Peltola, J., & Glatkowski, P. Optical Characterization of Highly Conductive Single-Wall Carbon-Nanotube Transparent Electrodes. United States. doi:10.1103/PhysRevB.75.235410.
Barnes, T. M., van de Lagemaat, J., Levi, D., Rumbles, G., Coutts, T. J., Weeks, C. L., Britz, D. A., Levitsky, I., Peltola, J., and Glatkowski, P. Mon . "Optical Characterization of Highly Conductive Single-Wall Carbon-Nanotube Transparent Electrodes". United States. doi:10.1103/PhysRevB.75.235410.
@article{osti_939298,
title = {Optical Characterization of Highly Conductive Single-Wall Carbon-Nanotube Transparent Electrodes},
author = {Barnes, T. M. and van de Lagemaat, J. and Levi, D. and Rumbles, G. and Coutts, T. J. and Weeks, C. L. and Britz, D. A. and Levitsky, I. and Peltola, J. and Glatkowski, P.},
abstractNote = {We report on a complete characterization of the optical dispersion properties of conducting thin films of single-wall carbon nanotubes (SWCNTs). The films studied exhibit sheet resistances between 50 and 1000 {Omega}/sq and optical transparencies between 65% and 95% on glass and quartz substrates. These films have the potential to replace transparent conducting oxides in applications such as photovoltaics and flat-panel displays; however, their optical properties are not sufficiently well understood. The SWCNT films are shown to be hole conductors, potentially enabling their use as hole-selective contacts and allowing alternative device designs. The fundamental optical, morphological, and electrical characteristics of the films are presented here, and a phenomenological optical model that accurately describes the optical behavior of the films is introduced. Particular attention is paid to ellipsometry measurements and thorough evaluation of the reflection and absorption spectra of the films.},
doi = {10.1103/PhysRevB.75.235410},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 23, 2007,
volume = 75,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}