Amine-terminated CdTe quantum dots were fabricated by a non-toxic, facile, one-pot method via a non-dimethylcadmium precursor and non-injection-based synthesis. To enhance the quantum yield of the CdTe quantum dots, sufficient passivation of the surface was accomplished with alkyl amines, and their structure, optical properties, and photoluminescence efficiency were investigated. For amine-terminated CdTe quantum dots, the position of the absorption peak was red-shifted at timelapse, which implies an increase in the size of the nanocrystals. In particular, the shorter the alkyl chain length, the higher the growth rate. Photoluminescence quantum yield for oleylamine-CdTe quantum dots, determined using rhodamine 6G as a standard, showed an improvement of 41% compared to that of non-functionalized CdTe quantum dots. These results could be described by the kinetics of nucleation and growth and the effects of steric hindrance with regard to alkyl chain length on quantum dots.
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