at Google ScholarTitle data
Pacakova, Barbara ; Vullum, Per Erik ; Kirch, Alexsandro ; Breu, Josef ; Miranda, Caetano Rodrigues ; Fossum, Jon Otto:
Large bandgap insulating superior clay nanosheets.
In: MRS Bulletin.
Vol. 47
(2022)
Issue 12
.
- pp. 1198-1203.
ISSN 0883-7694
DOI: https://doi.org/10.1557/s43577-022-00349-8
Abstract in another language
One can find conductive, semiconducting, and insulating single nanosheets with unique electronic properties that are tied to their two-dimensional (2D) structure. Here, we report on wide-bandgap 2D insulator nanosheets obtained by delamination of a synthetic 2D fluorohectorite clay mineral showing one of the largest bandgap insulators in the world. The bandgap was determined experimentally to be up to 7.1-8.2 eV measured by electron energy-loss spectroscopy in a high-resolution transmission electron microscope. The experimental data were supported by DFT calculations giving a bandgap of 5.5 eV. The single fluorohectorite clay crystalline nanosheets are 0.95-nm, and they can be synthetized with high-aspect ratios and lateral dimensions up to dozens of microns. These properties render these nanosheets promising candidates for practical applications in manually assembled or self-assembled electronic heterostructures, potentially serving as insulating nanosheets in graphene or various (semi)conductive 2D material-based devices.
Further data
| Item Type: | Article in a journal |
|---|---|
| Refereed: | Yes |
| Keywords: | X-RAY-DIFFRACTION; OPTICAL-PROPERTIES; H-BN; MICA; GAP; INTERCALATION; SPECTROSCOPY; INSIGHTS; NA |
| Institutions of the University: | Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Inorganic Chemistry I > Chair Inorganic Chemistry I - Univ.-Prof. Dr. Josef Breu |
| Result of work at the UBT: | No |
| DDC Subjects: | 500 Science > 540 Chemistry |
| Date Deposited: | 06 Apr 2023 06:47 |
| Last Modified: | 06 Apr 2023 06:47 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/75848 |