Study on chemical synthesis of SnSSe nanosheets and nanocrystals

Abstract

Two kinds of raw material combination for the hot injection method were investigated for the chemical synthesis of SnSSe nanosheets and nanocrystals, which are low-toxic optoelectronic materials. When SnSe quantum dots were synthesized by mainly using oleic acid as Se precursor solvent, the quantum dots changed from spherical to cubic as the size increased. The growth condition dependence of the nanocrystal formation process was discussed. When SnSSe nanocrystals were synthesized by mainly using trioctylphosphine as Se precursor solvent, it was found that the nanocrystal shape changed from dot to rod or sheet by reducing the proportion of S. The bandgap energy did not simply depend on the composition ratio of S but was affected by the change in the nanocrystal shape depending on the quantum confinement effect.

Study on the chemical synthesis process of Ga2O3 nanowires and their ultraviolet light sensor properties

“…We have reported that the Ga 2 O 3 nanowire phase changed from ε-type to β-type at much lower temperature than that known for bulk and thin films without HCl addition. 44 Fig. 7 shows the XRD measurement results of the sample obtained by performing the final dry heat treatment in the temperature range of RT to 900 °C for 60 minutes.…”