Effect of off-stoichiometry on properties of tin selenide crystals

  • Mohit TannaranaEmail author
  • G K Solanki
  • K D Patel
  • V M Pathak
  • Pratik Pataniya


The tin selenide crystals with different proportions of Sn and Se were grown by a direct vapour-transport technique. The layer by layer growth of crystals from the vapour phase was promoted by screw dislocation mechanism. The powder X-ray diffraction (XRD) shows good crystallinity of grown compound. The XRD patterns of grown compounds are well-indexed to orthorhombic structure. In the off-stoichiometric compound, evidence of \(\hbox {SnSe}_{{2}}\) secondary phase is observed due to excess of selenium. The morphological investigations were carried out using a Carl Zeiss optical microscope. The electron diffraction was also recorded from tiny flakes using a transmission electron microscope. The electrical resistivity both parallel and perpendicular to the c-axis was measured in the temperature range of 303–490 K and activation energy was also calculated using Arrhenius relation. The electrical study depicts the extrinsic semiconducting nature of grown compositions.


Crystal growth tin selenide secondary structure phase 


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Copyright information

© Indian Academy of Sciences 2019

Authors and Affiliations

  • Mohit Tannarana
    • 1
    Email author
  • G K Solanki
    • 1
  • K D Patel
    • 1
  • V M Pathak
    • 1
  • Pratik Pataniya
    • 1
  1. 1.Department of PhysicsSardar Patel UniversityAnandIndia

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