Erasable and recreatable two-dimensional electron gas at the heterointerface of SrTiO3 and a water-dissolvable overlayer
In: Science Advances, 2019, Heft eaaw72861-8.; Institute for Future Environments; Science & Engineering Faculty; School of Chemistry
academicJournal
Zugriff:
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 Sr 3 Al 2 O 6 ( a -SAO) on SrTiO 3 (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.
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Erasable and recreatable two-dimensional electron gas at the heterointerface of SrTiO3 and a water-dissolvable overlayer
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Autor/in / Beteiligte Person: | Han, Kun ; Hu, Kaige ; Li, Xiao ; Huang, Ke ; Huang, Zhen ; Zeng, Shengwei ; Qi, Dongchen ; Ye, Chen ; Yang, Jian ; Xu, Huan ; Ariando, Ariando ; Yi, Jiabao ; Lu, Weiming ; Yan, Shishen ; Wang, X. Renshaw |
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Zeitschrift: | Science Advances, 2019, Heft eaaw72861-8.; Institute for Future Environments; Science & Engineering Faculty; School of Chemistry |
Veröffentlichung: | American Association for the Advancement of Science, 2019 |
Medientyp: | academicJournal |
DOI: | 10.1126/sciadv.aaw7286 |
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