中文摘要：

以氧化镉、硒粉和二乙基二硫代氨基甲酸锌为原料,采用微流体法合成了稳定的CdSe@ZnS核？壳结构胶体量子点,利用X射线衍射仪（XRD）、透射电子显微电镜（TEM）、荧光光谱仪（PL）和紫外？可见吸收光谱（UV-vis）对量子点的结晶性能、微观形貌和发光性能进行了表征.将CdSe@ZnS核-壳结构量子点作为量子点发光二极管（QLED）的发光层材料,成功组装出ITO/PEDOT：PSS/Poly-TPD/CdSe@ZnS/PCBM/LiF：Al三明治结构的量子点发光二极管,在2V电压下成功点亮,器件发出黄色光,亮度达到4500Cd/cm2.

英文摘要：

In this paper, CdSe@ZnS core-shell colloidal quantum dots were synthesized by the microfluidic method using cadmium oxide, selenium powder and zinc diethyldithiocarbamate as the raw materials. X-ray diffraction （XRD）, transmission electron microscopy （TEM）, fluorescence spectroscopy （PL） and ultraviolet-visible absorption spectroscopy （UV-vis） were used to characterize the crystallization properties, crystal microstructure and luminescence properties of the QDs. QLED with the CdSe@ZnS core-shell quantum dots as luminescent layer materials were successfully fabricated. The QLED with sandwich structure of ITO / PEDOT： PSS / Poly-TPD / CdSe@ZnS / PCBM / LiF： Al emits yellow light with a luminance of 4500 Cd /cm2.