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In this study, thioglycolic acid (TGA) as a stabilizer in the aqueous phase synthesis of CdTe quantum dots , respectively, the the different CdTe reflux time with different pH initial value on the quality of the synthesis of CdTe quantum dots , the combination of UV - visible spectrum and the fluorescence spectroscopy testing methods to identify the optimum conditions , the final preparation of the a good stability CdTe quantum dots . Monodisperse polystyrene colloidal microspheres (PS), vertical deposition self-assembly of polystyrene colloidal crystal template was prepared . Using the SEM on the prepared surface of the template and section morphology was observed while utilizing the Maya 2000Pro fiber spectrometer the PS template reflectance spectra test , the results of the various analysis means that PS template found arranged in a face centered cubic rules , and The three-dimensional degree of order . Calculated according to the Bragg equation , a different position of the band gap of the particle diameter of the PS , the theoretical calculated values and the actual test results match . Next nanocrystalline codeposition prepared PS / CdTe composite three-dimensional ordered structure of the film , EDS analysis of the composite film , SEM test , that CdTe nanoparticles populated the PS template dimensional ordered pores . Studied the the PS particle size CdTe solution reflux time , PS solution and the the CdTe solution volume than the impact of the three - dimensional ordered macroporous of CdTe structure of the . PS / CdTe composite three-dimensional ordered structure , optical testing , mainly to study the characteristics of the fluorescence emission . This experiment the PS particle diameter of 386 nm , the PS mass concentration of 0.5 % , of CdTe solution was refluxed for 2 h, the study of its composite film . The experiment proved excitation wavelength , the PS concentration of CdTe solution was refluxed , PS and CdTe volume ratio and other conditions to affect the fluorescence emission characteristic of the PS / CdTe composite . When the excitation wavelength of 240nm , the the PS mass concentration of 1.2 % , of CdTe solution was refluxed for a time of 2 h , PS and CdTe volume ratio of 3: 1 prepared PS / CdTe composite films fluorescence emission peak position than reflux 2H CdTe film redshift 40nm or so , the fluorescence emission intensity 2.5 times , and the PS / CdTe composite three-dimensional ordered structure follow Bragg's law .
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