Complete Separation of Carriers in the GeS/SnS Lateral Heterostructure by Uniaxial Tensile Strain

ACS Applied Materials & Interfaces
Lei PengYucheng Huang

Abstract

The strategy of forming lateral heterostructures by stitching various two-dimensional materials overcomes the limitations due to the restricted properties of single-component materials. In this work, by using first-principles calculations, the electronic properties of GeS/SnS lateral heterostructures, together with the effect of strain, were systematically investigated. The results showed that with increasing tensile strain along the zigzag direction the band gap displays an extremely interesting variation: it linearly increases in the beginning until 2.4% strain (region I), then remains nearly constant until 5.7% (region II), and finally linearly decreases within the tensile limit (region III). Meanwhile, the electronic properties successively change from quasi-type II alignment to direct band gap to type II alignment with complete carrier separation. Analysis of the densities of states and partial charge densities indicates that the band gap increase in region I is due to the change in the orbital contributions to the states of the conduction band minimum (CBM) from Sn-pz to Sn-px, whereas the band gap decrease in region III is caused by an increasingly loose distribution of antibonding electrons at the CBM. Moreover, it was ...Continue Reading

References

Dec 15, 1994·Physical Review. B, Condensed Matter·P E Blöchl
Oct 15, 1996·Physical Review. B, Condensed Matter·G Kresse, J Furthmüller
Jun 15, 1992·Physical Review. B, Condensed Matter·J P Perdew, Y Wang
Oct 15, 2010·Journal of the American Chemical Society·Dimitri D VaughnRaymond E Schaak
Apr 28, 2011·Nature Communications·Xiao HuangHua Zhang
Aug 7, 2012·Nano Letters·Han WangTomas Palacios
Nov 8, 2012·Nature Nanotechnology·Qing Hua WangMichael S Strano
Jan 15, 2013·Journal of the American Chemical Society·Lun LiQiangbin Wang
Apr 10, 2014·Journal of the American Chemical Society·Yongqing CaiYong-Wei Zhang
Apr 16, 2014·Proceedings of the National Academy of Sciences of the United States of America·Hui FangAli Javey
Sep 30, 2014·Nature Materials·Yongji GongPulickel M Ajayan
Oct 7, 2014·Nature Nanotechnology·Gianluca FioriLuigi Colombo
May 24, 2015·Journal of the American Chemical Society·Xiaoyang ZhuCory A Nelson
Jul 23, 2015·Nature Communications·Masoud Mahjouri-SamaniDavid B Geohegan
Aug 4, 2015·Nano Letters·Yongji GongPulickel M Ajayan
Sep 26, 2015·ACS Nano·Hua Zhang
Oct 22, 2015·Journal of the American Chemical Society·Youngdong YooJames E Johns
Nov 7, 2015·ACS Nano·Ganesh R BhimanapatiJoshua A Robinson
Feb 13, 2016·ACS Applied Materials & Interfaces·Lijuan YeShijian Chen
Jul 30, 2016·Science·K S NovoselovA H Castro Neto
Nov 16, 2016·Nature Communications·Jianping JiHaibo Zeng
Dec 6, 2016·Physical Chemistry Chemical Physics : PCCP·Wei WeiBaibiao Huang

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Citations

Jul 4, 2021·Advanced Materials·Kai ChangStuart S P Parkin

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