Projects per year
Abstract
Chemical bonds, including covalent and ionic bonds, endow semiconductors with stable electronic configurations but also impose constraints on their synthesis and lattice-mismatched heteroepitaxy. Here, the unique multi-scale van der Waals (vdWs) interactions are explored in one-dimensional tellurium (Te) systems to overcome these restrictions, enabled by the vdWs bonds between Te atomic chains and the spontaneous misfit relaxation at quasi-vdWs interfaces. Wafer-scale Te vdWs nanomeshes composed of self-welding Te nanowires are laterally vapor grown on arbitrary surfaces at a low temperature of 100 °C, bringing greater integration freedoms for enhanced device functionality and broad applicability. The prepared Te vdWs nanomeshes can be patterned at the microscale and exhibit high field-effect hole mobility of 145 cm2/Vs, ultrafast photoresponse below 3 μs in paper-based infrared photodetectors, as well as controllable electronic structure in mixed-dimensional heterojunctions. All these device metrics of Te vdWs nanomesh electronics are promising to meet emerging technological demands. © 2023, The Author(s).
| Original language | English |
|---|---|
| Article number | 2431 |
| Number of pages | 14 |
| Journal | Nature Communications |
| Volume | 14 |
| Online published | 27 Apr 2023 |
| DOIs | |
| Publication status | Published - 2023 |
Funding
This work is supported by a fellowship award (CityU RFS2021- 1S04) (J.C.H.) and the Theme-based Research (T42-103/16-N) (J.C.H.) of the Research Grants Council of Hong Kong SAR, China, the Foshan Innovative and Entrepreneurial Research Team Program, China (No. 2018IT100031) (J.C.H.), Beijing Municipal Natural Science Foundation (Grant No. 4204090) (L.F.S.), and City University of Hong Kong (project no. 7005650) (J.C.H.). We acknowledge the support of TEM facilities of TRACE Center, City University of Hong Kong.
Publisher's Copyright Statement
- This full text is made available under CC-BY 4.0. https://creativecommons.org/licenses/by/4.0/
RGC Funding Information
- RGC-funded
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HO, J. C. Y. (Principal Investigator / Project Coordinator)
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CHAN, C. H. (Principal Investigator / Project Coordinator), LO, K. W. K. (Co-Principal Investigator), LUK, K. M. (Co-Principal Investigator), PUN, Y. B. E. (Co-Principal Investigator), Pang, S. (Co-Principal Investigator), SHAW, J. (Co-Principal Investigator), VELLAISAMY, A. L. R. (Co-Principal Investigator), CHAN, S. C. (Co-Investigator), DECROZE, C. (Co-Investigator), HO, J. C. Y. (Co-Investigator), JARRAHI, M. (Co-Investigator), LAM, Y. W. (Co-Investigator), LEE, E.-Y. J. (Co-Investigator), LEE, N. P. Y. (Co-Investigator), LEUNG, K. W. (Co-Investigator), LIU, H. (Co-Investigator), QU, S. (Co-Investigator), RENAUD, C. (Co-Investigator), Tong, K. (Co-Investigator), WANG, C. (Co-Investigator), WONG, H. (Co-Investigator), WONG, C. Y. A. (Co-Investigator), WONG, M. H. A. (Co-Investigator) & Wong, K. K. Y. (Co-Investigator)
1/01/17 → 30/06/23
Project: Research
Student theses
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Two-Dimensional Layered Bismuth Oxyselenides Crystals for Advanced Electronics/Optoelectronics
WANG, W. (Author), HO, J. C. Y. (Supervisor), 22 Apr 2024Student thesis: Doctoral Thesis
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