Facet-selective morphology-controlled remote epitaxy of ZnO microcrystals via wet chemical synthesisopen access
- Authors
- Choi, Joonghoon; Jin, Dae Kwon; Jeong, Junseok; Kang, Bong Kyun; Yang, Woo Seok; Ali, Asad; Yoo, Jinkyoung; Kim, Moon J.; Yi, Gyu-Chul; Hong, Young Joon
- Issue Date
- Nov-2021
- Publisher
- Nature Publishing Group
- Citation
- Scientific Reports, v.11, no.1, pp 1 - 11
- Pages
- 11
- Journal Title
- Scientific Reports
- Volume
- 11
- Number
- 1
- Start Page
- 1
- End Page
- 11
- URI
- https://scholarworks.bwise.kr/sch/handle/2021.sw.sch/20801
- DOI
- 10.1038/s41598-021-02222-1
- ISSN
- 2045-2322
- Abstract
- We report on morphology-controlled remote epitaxy via hydrothermal growth of ZnO micro- and nanostructure crystals on graphene-coated GaN substrate. The morphology control is achieved to grow diverse morphologies of ZnO from nanowire to microdisk by changing additives of wet chemical solution at a fixed nutrient concentration. Although the growth of ZnO is carried out on poly-domain graphene-coated GaN substrate, the direction of hexagonal sidewall facet of ZnO is homogeneous over the whole ZnO-grown area on graphene/GaN because of strong remote epitaxial relation between ZnO and GaN across graphene. Atomic-resolution transmission electron microscopy corroborates the remote epitaxial relation. The non-covalent interface is applied to mechanically lift off the overlayer of ZnO crystals via a thermal release tape. The mechanism of facet-selective morphology control of ZnO is discussed in terms of electrostatic interaction between nutrient solution and facet surface passivated with functional groups derived from the chemical additives.
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Collections - College of Engineering > Department of Display Materials Engineering > 1. Journal Articles
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