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Work-function engineering of carbon nanotube transparent conductive films |
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| Authors: | Seong Jun Kang Yoojin Song Won Mook Choi Jae-Young Choi |
| Affiliation: | a Division of Industrial Metrology, Korea Research Institute of Standards and Science, 1 Doryong-dong, Yuseong-gu, Daejeon 305-340, Republic of Korea b Department of Nano Surface Science, Korea University of Science and Technology, 52 Eoeun-dong, Yuseong-gu, Daejeon 305-333, Republic of Korea c Display Laboratory, Samsung Advanced Institute of Technology, P.O. Box 111, Suwon 440-600, Republic of Korea |
| Abstract: | We developed a method that allows control of the work function of carbon nanotube (CNT) transparent conductive films on a flexible sheet of plastic. The approach involves the deposition of small amount of metals, such as aluminum, on CNT transparent conductive films followed by a measure of the work function of the films using in situ ultraviolet photoelectron spectroscopy. Core-level spectra of the films were collected in order to investigate the chemical reaction when a small amount of aluminum was deposited on their surface in a stepwise manner. The measurements revealed that deposition of less than 0.5 nm of aluminum was enough to control the work function of CNT transparent conductive films. |
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