Abstract
The electrical, electronic and optical properties of multilayer graphene (MLG) films have been investigated systematically using a 4-point probe method, ultraviolet photoelectron spectroscopy, and ultraviolet/visible spectrometer. Monolayer graphene and MLG (2, 3, 4 and 5 layers) films were prepared on glass and SiO2 substrates using a chemical vapor deposition and multi-transfer process. Raman spectroscopy was used to evaluate the quality of MLG films. Sheet resistance, work function and transmittance were measured systematically for each monolayer graphene and MLG films. In addition, surface treatment with HNO3 was performed to reduce the sheet resistance of the MLG films. The sheet resistance was reduced to 198 Ω/square after the treatment without any significant change in the MLG film quality. These results will provide useful information for the optoelectronic devices based on MLG films.
Keywords: Graphene, transparent electrode, transmittance, work function, sheet resistance.
Current Nanoscience
Title:Electrical, Electronic and Optical Characterization of Multilayer Graphene Films for Transparent Electrodes
Volume: 9 Issue: 4
Author(s): Nam Kwang Cho, Yong Un Jung, Kwun-Bum Chung and Seong Jun Kang
Affiliation:
Keywords: Graphene, transparent electrode, transmittance, work function, sheet resistance.
Abstract: The electrical, electronic and optical properties of multilayer graphene (MLG) films have been investigated systematically using a 4-point probe method, ultraviolet photoelectron spectroscopy, and ultraviolet/visible spectrometer. Monolayer graphene and MLG (2, 3, 4 and 5 layers) films were prepared on glass and SiO2 substrates using a chemical vapor deposition and multi-transfer process. Raman spectroscopy was used to evaluate the quality of MLG films. Sheet resistance, work function and transmittance were measured systematically for each monolayer graphene and MLG films. In addition, surface treatment with HNO3 was performed to reduce the sheet resistance of the MLG films. The sheet resistance was reduced to 198 Ω/square after the treatment without any significant change in the MLG film quality. These results will provide useful information for the optoelectronic devices based on MLG films.
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Cite this article as:
Cho Kwang Nam, Jung Un Yong, Chung Kwun-Bum and Kang Jun Seong, Electrical, Electronic and Optical Characterization of Multilayer Graphene Films for Transparent Electrodes, Current Nanoscience 2013; 9 (4) . https://dx.doi.org/10.2174/15734137113099990057
DOI https://dx.doi.org/10.2174/15734137113099990057 |
Print ISSN 1573-4137 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-6786 |
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