TU Darmstadt / ULB / TUprints

Band lineup of lattice mismatched InSe/GaSe quantum well structures prepared by van der Waals epitaxy: Absence of interfacial dipoles

Lang, O. ; Klein, Andreas ; Pettenkofer, Christian ; Jaegermann, Wolfram ; Chevy, Alain (2021):
Band lineup of lattice mismatched InSe/GaSe quantum well structures prepared by van der Waals epitaxy: Absence of interfacial dipoles. (Publisher's Version)
In: Journal of Applied Physics, 80 (7), pp. 3817-3821. AIP Publishing, ISSN 0021-8979, e-ISSN 1077-3118,
DOI: 10.26083/tuprints-00019891,
[Article]

[img]
Preview
Text
21-1.363335.pdf
Available under only the rights of use according to UrhG.

Download (944kB) | Preview
Item Type: Article
Origin: Secondary publication service
Status: Publisher's Version
Title: Band lineup of lattice mismatched InSe/GaSe quantum well structures prepared by van der Waals epitaxy: Absence of interfacial dipoles
Language: English
Abstract:

Epitaxial growth of the strongly lattice mismatched (6.5%) layered chalcogenides InSe and GaSe on each other is obtained with the concept of van der Waals epitaxy as proven by low‐energy electron diffraction and scanning tunnel microscope. InSe/GaSe/InSe and GaSe/InSe/GaSe quantum well structures were prepared by molecular beam epitaxy and their interface properties were characterized by soft x‐ray photoelectron spectroscopy. Valence and conduction band offsets are determined to be 0.1 and 0.9 eV, respectively, and do not depend on deposition sequence (commutativity). As determined from the measured work functions the interface dipole is 0.05 eV; the band lineup between the two materials is correctly predicted by the Anderson model (electron affinity rule).

Journal or Publication Title: Journal of Applied Physics
Journal volume: 80
Number: 7
Publisher: AIP Publishing
Classification DDC: 500 Naturwissenschaften und Mathematik > 530 Physik
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Surface Science
Date Deposited: 12 Nov 2021 13:50
Last Modified: 12 Nov 2021 13:50
DOI: 10.26083/tuprints-00019891
Corresponding Links:
URN: urn:nbn:de:tuda-tuprints-198914
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/19891
Export:
Actions (login required)
View Item View Item