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Laser Ablated Copper Oxide Nanocomposites
並列摘要
Laser ablation of a copper target in tetrahydrofuran with 0:0 wt% and 0:8 wt% concentrations of polystyrene was performed using the second harmonic of a pulsed nanosecond Nd:YAG laser (532 nm). We observed a shoulder in the ultraviolet-visible absorption at 340 nm and the photoluminescence emissions (excited by 350 nm) are up to 2:5 eV, which indicate that Cu2O nanocomposites were produced. The size distribution and agglomeration of the nanocomposites were investigated by transmission electron microscopy and dynamic light scattering, respectively. We observed a reduction in the average size of the nanocomposites from 50 nm to 30 nm owing to the addition of polymer (0:8 wt%) and increasing the pulse energy (from 80 mJ/pulse to 150 mJ/pulse).