在水溶性的 CdTe 量点(QD ) 的光性质上稳定代理人和反应时间的影响被讨论。thioglycolic 酸(TGA )-CdTe OD 被 TEM, XRD 和 FTIR 描绘。L 半胱氨酸(Cys ) 或 golutathione (GSH ) 什么时候被选择为稳定代理人,被发现大尺寸的 QD 能更容易被综合, TGA 是合适的因为在 Cd2+ 和 sulfhydryl 组之间的效果,准备高度光的 QD。而且,吸收波长,在半最大值(FWHM ) 的完整的宽度,司烧移动,光致发光(PL ) 量收益和 TGA-CdTe 的 PL 稳定性强烈依赖于反应时间,吸收波长随着指数的功能对反应时间在变化。在 2 h 准备的 TGA-CdTe QD 拥有更优秀的光性质。
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 Cd^2+ 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.