Electrical properties of bromine doped SnSe2 van der Waals material

Da Seul Hyeon, Min Suk Oh, Jin Tae Kim, Yong Jei Lee, Sang Il Kim, Seung Pil Moon, Nadra Hamayoun, Sung Wng Kim, Kyu Hyoung Lee, Joonho Bang, Kimoon Lee

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


Electrical properties of Br-doped SnSe2 van der Waals (vdW) materials are investigated by synthesizing polycrystalline SnSe2-xBrx via a solid-state reaction route. From the x-ray diffraction and Raman spectra results, it can be confirmed that Br impurity substitutes well on a Se-site by minimizing the lattice deformation as well as the red-shift of A 1g vibrational mode corresponding to the Sn-Se bond. Electrical characterization reveals that Br dopant is an efficient electron donor for vdW SnSe2 system as it easily encourages the electron carrier concentration from ∼1017 to ∼1020 cm-3, thus resulting in the semiconductor-metal transition behavior.

Original languageEnglish
Article number455102
JournalJournal Physics D: Applied Physics
Issue number45
StatePublished - 9 Oct 2018


  • doping
  • electrical transport
  • van der Waals (vdW) materials


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