48 - Investigation of the Structural Properties of SnO2 Co-doped by (K, Dy) and (K, Sm) Synthesized

Najoua Eraza, Mohamed Youssef Messous, Mohamed Naji, Mounia Tahri
Code: (S2102_ID048)
Paper Title : Investigation of the Structural Properties of SnO2 Co-doped by (K, Dy) and (K, Sm) Synthesized by the Co-precipitation Method for Photon Conversion

Presented in:
9th International Renewable and Sustainable Energy Conference #IRSEC21
IEEE Conference
Online, November 23-27, 2021
Workshop 2 - Emerging semiconductors for photovoltaics

Presented by :
Najoua Eraza
Laboratory of Applied Physics, Computer Science and Statistics (LPAIS), Faculty of sciences
Fes, Morocco

Abstract - The present study shows the synthesis of (K, Dy) and (K, Sm) co-doped SnO2 by a simple co precipitation method at room temperature. The SnO2 precursor solution was prepared from tin(II) chloride dihydrate (SnCl2,2H2O).
The objective is to investigate the spectroscopic properties of transparent conductive oxide, activated by different concentrations of the lanthanides Dy3+ and Sm3+, adding to each of these elements the alkaline ion K+ as a charge compensator. This oxide, due to the emission of light, can be used in some specific applications such as solar cells, energy conversion, telecommunication, illumination and photon management.
Tin oxide powders have been characterized by X-ray diffraction and infrared spectroscopy.
Structural characterization confirmed the formation of a SnO2 phase with a rutile tetragonal structure at 600°C calcinations temperature, with orientation preferences for (110). Rietveld refinement analysis revealed the contraction of lattice parameters due to doping / co-doping, with a particle size range of 12-39 nm (determined using Debye Scherrer's formula).
The FTIR spectra confirmed on the one hand, the presence of
Sn-O and Sn–O–Sn bonds in all the samples produced, and on the other hand, the transmittance is greater in the SnO2(K+, Dy3+) that SnO2(K +, Sm3 +) in the energy range of (400-4000) cm-1."
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