Selective synthesis of copper gallium sulfide (CuGaS₂) nanostructures of different sizes, crystal phases, and morphologies

Abstract

We report the selective synthesis of CuGaS2 nanostructures of different sizes (3.0–10.9 nm), phases (chalcopyrite and wurtzite) and morphologies (nanocrystals and nanowires) in hot-solvent synthesis.

Colloidal synthesis of CuGaS x Se 2 − x nanoribbons mediated by Cu 1.75 (SSe) nanocrystals as catalysts

“…S2. The substantially red shifts of optical absorption band edges implied the decrease of band gaps of CuGaS x Se 2Àx nanoribbons with the decrease of x values, which were in agreement with those of the CuGaS 2 and CuGaSe 2 [12,42]. Although the wavelengths of the absorption onsets could be confirmed, the nanoribbons seemed to have a series of absorption edges, ranging from ca.…”

Electronic structure and photocatalytic activity of wurtzite Cu–Ga–S nanocrystals and their Zn substitution

“…45,46 In fact, 1-dodecanethiol and oleylamine are strong coordinating ligands and can bind to the surface of Cu−Ga−S nanocrystals and consequently decrease the surface energy for stabilizing the metastable wurtzite phase. [43][44][45][46] Such a 'ligand effect' as a structure-directing agent has been observed also in experimental studies of wurtzite CuInS 2 nanocrystal synthesis. To prove the necessity of 1-dodecanethiol in the synthesis as a capping ligand and sulfur source, CuGa 5 S 8 was prepared employing solid sulfur dissolved in oleylamine as a sulfur source instead of 1-dodecanethiol under the same condition.…”

One-pot hydrothermal preparation of wurtzite CuGaS2 and its application as a photoluminescent probe for trace detection of l-noradrenaline

“…However, it is difficult how to control the stoichiometric composition and phase purity of product. For this reason, a variety of new methods, such as electrodeposition [16,17], X-ray irradiation [18], vacuum thermal evaporation method under thermal gradient [19], metal organic chemical vapor deposition [20], electron beam evaporation [21], chemical vapor transport [22], hot-injection [23,24], thermolysis of dithiocarbamate precursors [14], were developed. And CuGaS 2 with stoichiometric composition and high phase purity was obtained.…”