Strong quantum confinement effects in SnS nanocrystals produced by ultrasound-assisted method


Azizian-Kalandaragh Y. , Khodayari A., Zeng Z., Garoufalis C. S. , Baskoutas S., Cervera Gontard L.

JOURNAL OF NANOPARTICLE RESEARCH, cilt.15, sa.1, 2013 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 15 Konu: 1
  • Basım Tarihi: 2013
  • Doi Numarası: 10.1007/s11051-012-1388-1
  • Dergi Adı: JOURNAL OF NANOPARTICLE RESEARCH

Özet

Nanocrystalline SnS powder has been prepared using tin chloride (SnCl2) as a tin ion source and sodiumsulfide (Na2S) as a sulfur ion source with the help of ultrasound irradiation at room temperature. The as-synthesized SnS nanoparticles were quantitatively analyzed and characterized in terms of their morphological, structural, and optical properties. The detailed structural and optical properties confirmed the orthorhombic SnS structure and a strongly blue shifted direct band gap (1.74 eV), for synthesized nanoparticles. The measured band gap energy of SnS nanoparticles is in a fairly good agreement with the results of theoretical calculations of exciton energy based on the potential morphing method in the Hartree-Fock approximation.