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- W2018293189 abstract "Copper gallium diselenide (CuGaSe2) powders were synthesized via the sol–gel method followed by a selenization process. The sol–gel process can effectively reduce the required synthesis temperature to 400 °C due to enhanced reactivity and improved composition homogeneity. The amount of Cu2Se impurity phase was decreased when sufficient Ga3+ was added to the precursors. CuGaSe2 powders were successfully prepared when the Ga3+/Cu2+ molar ratio was increased to 2. The formation of CuGaSe2 with a pure chalcopyrite structure was confirmed via the Rietveld refinement analysis. With decreasing Ga3+/Cu2+ molar ratios, the particle size of the prepared CuGaSe2 powders was significantly enlarged because the copper selenide phase acted as a flux for the particle growth. The optical absorption spectra revealed the obtained CuGaSe2 to have a band gap of 1.68 eV. The sol–gel method combined with the selenization process was demonstrated to provide a potential approach for fabricating CuGaSe2 materials." @default.
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- W2018293189 date "2013-12-01" @default.
- W2018293189 modified "2023-10-10" @default.
- W2018293189 title "Synthesis and characterization of copper gallium diselenide powders prepared from the sol–gel derived precursors" @default.
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- W2018293189 doi "https://doi.org/10.1016/j.ceramint.2013.04.042" @default.
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