- Title
- Erasable and recreatable two-dimensional electron gas at the heterointerface of SrTiO3 and a water-dissolvable overlayer
- Creator
- Han, Kun; Hu, Kaige; Li, Xiao; Huang, Ke; Huang, Zhen; Zeng, Shengwei; Qi, Dongchen; Ye, Chen; Yang, Jian; Xu, Huan; Ariando, Ariando; Yi, Jiabao; Lü, Weiming; Yan, Shishen; Wang, X. Renshaw
- Relation
- ARC.FT160100207 http://purl.org/au-research/grants/arc/FT160100207
- Relation
- Science Advances Vol. 5, Issue 8, no. eaaw7286
- Publisher Link
- http://dx.doi.org/10.1126/sciadv.aaw7286
- Publisher
- American Association for the Advancement of Science (AAAS)
- Resource Type
- journal article
- Date
- 2019
- Description
- While benefiting greatly from electronics, our society also faces a major problem of electronic waste, which has already caused environmental pollution and adverse human health effects. Therefore, recyclability becomes a must-have feature in future electronics. Here, we demonstrate an erasable and recreatable two-dimensional electron gas (2DEG), which can be easily created and patterned by depositing a water-dissolvable overlayer of amorphous Sr3Al2O6 (a-SAO) on SrTiO3 (STO) at room temperature. The 2DEG can be repeatedly erased or recreated by depositing the a-SAO or dissolving in water, respectively. Photoluminescence results show that the 2DEG arises from the a-SAO–induced oxygen vacancy. Furthermore, by gradually depleting the 2DEG, a transition of nonlinear to linear Hall effect is observed, demonstrating an unexpected interfacial band structure. The convenience and repeatability in the creation of the water-dissolvable 2DEG with rich physics could potentially contribute to the exploration of next generation electronics, such as environment-friendly or water-soluble electronics.
- Subject
- electronics; environmental; pollution; water-dissolvable; SDG 3; Sustainable Development Goals
- Identifier
- http://hdl.handle.net/1959.13/1455887
- Identifier
- uon:45145
- Identifier
- ISSN:2375-2548
- Rights
- © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license, which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited. (http://creativecommons.org/licenses/by-nc/4.0/)
- Language
- eng
- Full Text
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