A method to synthesize CdSe nanocrystals

CdSe nanocrystals(NCs)have great application prospects in various fields due to their novel properties.Some high-cost and toxic materials such as tri-n-octylphosphine oxide(TOPO)are used in the popular method to synthesize CdSe NCs.Based on this,a new low-cost,environment-friendly and safe solvent was introduced in the synthesis of CdSe NCs in this paper.The prepared CdSe NCs were char-acterized by ultraviolet-visible spectra(UV-Vis),photolu-minescence(PL),transmission electron micrograph(TEM),energy disperse X-ray spectra(EDX)and X-ray diffraction(XRD).The CdSe NCs obtained which show a good PL pro-perty are monodisperse,size-tunable and of high crystallinity.It indicates that the new solvent A is a good substitute for the solvent used in the classic route and achieves a greener synthesis of CdSe NCs.