Phase Engineering of 2D Tin Sulfides.
Tin sulfides can exist in a variety of phases and polytypes due to the different oxidation states of Sn. A subset of these phases and polytypes take the form of layered 2D structures that give rise to a wide host of electronic and optical properties. Hence, achieving control over the phase, polytype, and thickness of tin sulfides is necessary to utilize this wide range of properties exhibited by the compound. This study reports on phase-selective growth of both hexagonal tin (IV) sulfide SnS2 and orthorhombic tin (II) sulfide SnS crystals with diameters of over tens of microns on SiO2 substrates through atmospheric pressure vapor-phase method in a conventional horizontal quartz tube furnace with SnO2 and S powders as the source materials. Detailed characterization of each phase of tin sulfide crystals is performed using various microscopy and spectroscopy methods, and the results are corroborated by ab initio density functional theory calculations.
Materials Science and Engineering Program, University of California, Riverside, CA, 92525, USA.
Zafer
Z
Mutlu
Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN, 55455, USA.
Ryan J
RJ
Wu
Department of Electrical and Computer Engineering, University of California, Riverside, CA, 92525, USA.
Darshana
D
Wickramaratne
Materials Science and Engineering Program, University of California, Riverside, CA, 92525, USA.
Sina
S
Shahrezaei
Materials Science and Engineering Program, University of California, Riverside, CA, 92525, USA.
Chueh
C
Liu
Materials Science and Engineering Program, University of California, Riverside, CA, 92525, USA.
Selcuk
S
Temiz
Department of Chemistry, University of California, Riverside, CA, 92525, USA.
Andrew
A
Patalano
Department of Electrical and Computer Engineering, University of California, Riverside, CA, 92525, USA.
Mihrimah
M
Ozkan
Department of Electrical and Computer Engineering, University of California, Riverside, CA, 92525, USA.
Roger K
RK
Lake
Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN, 55455, USA.
K A
KA
Mkhoyan
Department of Mechanical Engineering, University of California, Riverside, CA, 92525, USA.
Cengiz S
CS
Ozkan
2D materials; SnS; SnS2; phase engineering; tin sulfides