Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/8891
Title: Vertical van der waals heterostructure of single layer InSe and SiGe
Authors: Eren, İsmail
Özen, Sercan
Sözen, Yiğit
Yağmurcukardeş, Mehmet
Şahin, Hasan
Publisher: American Chemical Society
Abstract: We present a first-principles investigation on the stability, electronic structure, and mechanical response of ultrathin heterostructures composed of single layers of InSe and SiGe. First, by performing total energy optimization and phonon calculations, we show that single layers of InSe and SiGe can form dynamically stable heterostructures in 12 different stacking types. Valence and conduction band edges of the heterobilayers form a type-I heterojunction having a tiny band gap ranging between 0.09 and 0.48 eV. Calculations on elastic-stiffness tensor reveal that two mechanically soft single layers form a heterostructure which is stiffer than the constituent layers because of relatively strong interlayer interaction. Moreover, phonon analysis shows that the bilayer heterostructure has highly Raman active modes at 205.3 and 43.7 cm(-1), stemming from the out-of-plane interlayer mode and layer breathing mode, respectively. Our results show that, as a stable type-I heterojunction, ultrathin heterobilayer of InSe/SiGe holds promise for nanoscale device applications.
URI: https://doi.org/10.1021/acs.jpcc.9b06404
https://hdl.handle.net/11147/8891
ISSN: 1932-7447
1932-7455
Appears in Collections:Photonics / Fotonik
Physics / Fizik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

Files in This Item:
File SizeFormat 
acs.jpcc.9b06404.pdf1.79 MBAdobe PDFView/Open
Show full item record



CORE Recommender

SCOPUSTM   
Citations

14
checked on Apr 5, 2024

WEB OF SCIENCETM
Citations

14
checked on Mar 27, 2024

Page view(s)

166
checked on Apr 15, 2024

Download(s)

130
checked on Apr 15, 2024

Google ScholarTM

Check




Altmetric


Items in GCRIS Repository are protected by copyright, with all rights reserved, unless otherwise indicated.