Spatially Resolved Band Gap and Dielectric Function in Two-Dimensional Materials from Electron Energy Loss Spectroscopy.
Journal
The journal of physical chemistry. A
ISSN: 1520-5215
Titre abrégé: J Phys Chem A
Pays: United States
ID NLM: 9890903
Informations de publication
Date de publication:
24 Feb 2022
24 Feb 2022
Historique:
pubmed:
16
2
2022
medline:
16
2
2022
entrez:
15
2
2022
Statut:
ppublish
Résumé
The electronic properties of two-dimensional (2D) materials depend sensitively on the underlying atomic arrangement down to the monolayer level. Here we present a novel strategy for the determination of the band gap and complex dielectric function in 2D materials achieving a spatial resolution down to a few nanometers. This approach is based on machine learning techniques developed in particle physics and makes possible the automated processing and interpretation of spectral images from electron energy loss spectroscopy (EELS). Individual spectra are classified as a function of the thickness with
Identifiants
pubmed: 35167301
doi: 10.1021/acs.jpca.1c09566
pmc: PMC8883475
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
1255-1262Références
Nature. 2019 Sep;573(7773):247-250
pubmed: 31406319
Sci Rep. 2017 Jun 13;7(1):3445
pubmed: 28611385
Ultramicroscopy. 2002 Jul;92(2):47-56
pubmed: 12138942
Ultramicroscopy. 2005 Feb;102(3):209-14
pubmed: 15639351
J Electron Microsc (Tokyo). 2000;49(4):517-24
pubmed: 12005190
Ultramicroscopy. 2021 Mar;222:113202
pubmed: 33453606
Ultramicroscopy. 2018 Jan;184(Pt A):39-45
pubmed: 28843183
Eur Phys J C Part Fields. 2017;77(10):663
pubmed: 31997920
Ultramicroscopy. 2009 Aug;109(9):1183-8
pubmed: 19515492
ACS Nano. 2014 Feb 25;8(2):1263-72
pubmed: 24392873
Ultramicroscopy. 2020 Oct;217:113052
pubmed: 32629304
Ultramicroscopy. 2019 Dec 14;210:112919
pubmed: 31911393
Nat Mater. 2019 Nov;18(11):1158-1171
pubmed: 31308514
Ultramicroscopy. 2003 Sep;96(3-4):535-46
pubmed: 12871814
Micron. 2005;36(4):369-79
pubmed: 15857776
Micron. 2009 Feb;40(2):269-73
pubmed: 18722779
J Microsc. 1999 Apr;194(1):203-209
pubmed: 10320554
Micron. 2008 Dec;39(8):1092-110
pubmed: 18395457
ACS Nano. 2019 Feb 26;13(2):2136-2142
pubmed: 30676744
J Microsc. 1998 Sep;191(3):286-296
pubmed: 9767493