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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국진공학회(ASCT) Applied Science and Convergence Technology Applied Science and Convergence Technology Vol.30 No.2
- 발행연도
- 2021.3
- 수록면
- 45 - 49 (5page)
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초록· 키워드
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Herein, we report on a novel method for transferring two-dimensional (2D) materials grown on Au substrates using sulfur intercalation between the 2D materials and the Au surfaces. The strong nature of the S–Au bond allows intercalation of sulfur atoms into their interface, under a sulfur-rich atmosphere, at 600 ℃. The relaxed interfacial interaction achieved via intercalation is carefully confirmed by recovering phonon mode and work function of tungsten disulfide (WS₂) in Raman spectra and Kelvin probe force microscopy, and, more importantly, by observing the expansion of the interfacial distance, from 0.24 to 0.44 nm, using cross-sectional transmission electron microscopy. The released interactions facilitate delamination of WS₂ from the Au surface, using an electrochemical bubbling method. The resultant Au foil then is reused for repeated WS₂ growth. The successful transfer of other 2D materials, including molybdenum disulfide and hexagonal boron nitride, is also demonstrated. Our strategy advances the use of Au substrates for growing wafer-scale 2D monolayers.
목차
ABSTRACT
1. Introduction
2. Experimental details
3. Results and discussion
4. Conclusions
References
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