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https://doi.org/10.1088/2053-1583/abf54c
Title: | Fast growth of centimeter-scale single-crystal copper foils with high-index planes by the edge-incision effect | Authors: | Li, L Ma, T Yu, W Zhu, M Li, J Chen, Z Li, H Zhao, M Teng, J Tian, B Su, C Loh, KP |
Issue Date: | 1-Jul-2021 | Publisher: | IOP Publishing | Citation: | Li, L, Ma, T, Yu, W, Zhu, M, Li, J, Chen, Z, Li, H, Zhao, M, Teng, J, Tian, B, Su, C, Loh, KP (2021-07-01). Fast growth of centimeter-scale single-crystal copper foils with high-index planes by the edge-incision effect. 2D Materials 8 (3) : 035019-035019. ScholarBank@NUS Repository. https://doi.org/10.1088/2053-1583/abf54c | Abstract: | Single-crystal copper substrates have gained importance for the preparation of high-quality graphene and hexagonal boron nitride monolayer films by chemical vapor deposition (CVD). Especially, large-scale single-crystal copper foils with high-index planes are synthesized recently and attract great interests. However, the current synthesis methods of single-crystal copper foils and films are energy and time-consuming. Here, we show a rapid and efficient approach for the preparation of centimeter-scale single-crystal copper foils by making small incisions at the edges of polycrystalline copper foils before high-temperature annealing. 1.5 cm × 4 cm pieces of grain-boundary-free copper foils can be prepared by annealing at 1080 °C for 60 min. The annealed copper foil manifests a single high-index plane and is grain-boundary-free over the whole area. We also show that CVD of graphene on the high-index single-crystal copper affords a higher growth rate than on low-index copper substrates. | Source Title: | 2D Materials | URI: | https://scholarbank.nus.edu.sg/handle/10635/219423 | ISSN: | 2053-1583 | DOI: | 10.1088/2053-1583/abf54c |
Appears in Collections: | Staff Publications Elements |
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