Electric field controlled type-I and type-II conversion of BP/SnS van der Waals heterostructure.
BP/SnS heterostructure
electric field
first-principles
type I and type II conversion
Journal
Journal of physics. Condensed matter : an Institute of Physics journal
ISSN: 1361-648X
Titre abrégé: J Phys Condens Matter
Pays: England
ID NLM: 101165248
Informations de publication
Date de publication:
25 May 2021
25 May 2021
Historique:
received:
02
02
2021
accepted:
27
04
2021
pubmed:
28
4
2021
medline:
28
4
2021
entrez:
27
4
2021
Statut:
epublish
Résumé
Type-I heterostructure, in which electrons and holes are confined in same region, is widely used in light emitting diodes and semiconductor lasers. Type-II heterostructure is widely used in photovoltaic devices because of its excellent spatial separation property of electrons and holes. Can we integrate photovoltaic, photoelectric properties with luminescent property in one device? Here we report a van der Waals heterostructure formed by black phosphorus (BP) and SnS monolayers. It is expected to realize these functions in one device. By first-principles methods, the structural stability, electronic properties and optical properties are investigated. It was found that the BP/SnS bilayer is type-II heterostructure with an indirect bandgap of 0.56 eV. The
Identifiants
pubmed: 33906168
doi: 10.1088/1361-648X/abfc15
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Informations de copyright
© 2021 IOP Publishing Ltd.