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The influence of stabilizing agents and reaction time on the luminescent properties of water-soluble CdTe quantum dots(QDs) was discussed.The thioglycolic acid(TGA)-CdTe ODs were characterized by TEM,XRD and FTIR.It is found that larger-size QDs can be synthesized more easily when L-cysteine(Cys) or golutathione(GSH) is chosen as stabilizing agent and TGA is proper to prepare highly luminescent QDs because of the effect between Cd2+ and sulfhydryl group.Furthermore,the absorption wavelength,full width at half maximum(FWHM),stokes shift,photoluminescence(PL) quantum yield and PL stability of TGA-CdTe are strongly dependent on reaction time,in which the absorption wavelength changes against reaction time with an exponential function.The TGA-CdTe QDs prepared at 2 h possess more excellent luminescent properties.
The influence of stabilizing agents and reaction time on the luminescent properties of water-soluble CdTe quantum dots (QDs) was discussed. The thioglycolic acid (TGA) -CdTe ODs were characterized by TEM, XRD and FTIR. It is found that larger-size QDs can be synthesized more easily when L-cysteine (Cys) or golutathione (GSH) is chosen as a stabilizing agent and TGA is due to prepare highly luminescent QDs because of the effect between Cd 2+ and sulfhydryl groups. at half maximum (FWHM), stokes shift, photoluminescence (PL) quantum yield and PL stability of TGA-CdTe are strongly dependent on reaction time, in which the absorption wavelength changes against reaction time with an exponential function. The TGA-CdTe QDs prepared at 2 h possess more excellent luminescent properties.