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通过原位种子聚合构筑了碲化镉量子点(CdTe QDs)/聚吡咯(PPy)纳米复合物。利用透射电镜、红外光谱及荧光发射光谱对其形貌、结构、光致发光性质进行了测试分析。研究结果表明,复合物中CdTe量子点结晶良好。复合物中两组分间能级耦合相互作用使量子点表面陷阱态钝化,从而导致对应CdTe量子点带间跃迁的410nm发光峰的出现,显示了复合物作为光电器件材料的潜在应用价值。
CdTe quantum dots (CdTe QDs) / polypyrrole (PPy) nanocomposites were constructed by in situ seed polymerization. The morphology, structure and photoluminescence properties were investigated by transmission electron microscopy, infrared spectroscopy and fluorescence emission spectroscopy. The results show that the CdTe quantum dots in the complex crystallize well. The energy level coupling interaction between the two components leads to the deactivation of the trapped state on the surface of the quantum dots, resulting in the appearance of a 410 nm emission peak corresponding to the band-to-band transition of the CdTe quantum dots, indicating the potential application of the composite as a material of the optoelectronic device.