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- W2796397788 abstract "The stoichiometric Cu<sub>2</sub>Se and non-stoichiometric Cu<sub>1.98</sub>Se nanoparticles were prepared by a simple chemical method at room temperature The X-ray diffraction patterns revealed the formation of single phase nanostructured Cu<sub>2</sub>Se and Cu<sub>1.98</sub>Se particles with cubic lattice for different deposition conditions and the particle size is 17.45 nm, 26.85 nm respectively for Cu<sub>2</sub>Se and Cu<sub>2-x</sub>Se. Fourier transform infrared spectroscopy (FTIR) confirmed the formation of single phase Cu<sub>2</sub>Se and Cu<sub>1.98</sub>Se nanoparticles, with characteristic vibrational modes of Cu and Se ions. Scanning electron microscopy (SEM) studies revealed that the Cu<sub>2</sub>Se particle surface is found to be textured with grains of irregular shapes while for Cu<sub>1.98</sub>Se, a mesh like structure which is loosely packed than Cu<sub>2</sub>Se is observed. This distinction may be due to variations in Cu content as seen from EDAX analysis. UV-Vis Studies specify blue shift from the bulk copper selenide as observed from the absorption shoulders occurs at 281 nm for Cu<sub>2</sub>Se and 276 nm for Cu<sub>1.98</sub>Se samples. The Optical band gap obtained for Cu<sub>2</sub>Se and Cu<sub>2-x</sub>Se nanoparticles are 4.41 eV and 4.52 eV respectively.<div><br></div>" @default.
- W2796397788 created "2018-04-13" @default.
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- W2796397788 date "2018-04-07" @default.
- W2796397788 modified "2023-09-23" @default.
- W2796397788 title "Structural and Optical Characterization of Copper Selenide (Cu2-XSe) Nanoparticles" @default.
- W2796397788 doi "https://doi.org/10.30799/jnst.sp204.18040202" @default.
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