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- Department of Physics, AMET University, Chennai – 603 112, Tamilnadu, India
Pure and doped (Ni2+ and Cu2+) SnO2 nanoparticles was successfully synthesized by facile hydrothermal technique. The particles size, structure, morphology and composition of the samples were characterized by X-ray powder diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HR-TEM) and energy dispersive X-ray analysis (EDX) spectroscopy. The optical properties of the samples were analyzed by ultraviolet–visible (UV-vis) and photoluminescence (PL) spectroscopy. The optical band gap energies of pure, Cu and Ni doped SnO2 nanoparticles were calculated to be 3.76, 3.83 and 3.87 eV, respectively. The PL emission spectrum shows that a strong luminescence peak located at 397 nm, which can be attributed to the near band-to-band edge transition recombination of electron-hole pairs. The smaller particle size of SnO2 nanoparticles showed apparent quantum confinement effects. Finally, the mechanism for the formation of quantum size SnO2 was also discussed..
Semiconductors, SnO2, Dopants Effect, Structural studies, Morphological studies.
Submitted at: Jan. 9, 2013
Accepted at: June 9, 2016
K. ANANDAN, Effect of Ni2+ and Cu2+ dopants on SnO2 semiconductor nanoparticles synthesized by facile hydrothermal technique and their optical properties, Journal of Optoelectronics and Advanced Materials Vol. 18, Iss. 5-6, pp. 526-530 (2016)
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