研究目的
To tailor nanohybrid composites of CdSe@PMMA in order to determine the optimum composite ratio that is suitable for optoelectronic applications such as light emitting devices.
研究成果
The CdSe@PMMA nanohybrid composite films exhibit tunable optical properties with potential applications in light emitting devices, particularly for white or monochromatic green lighting. The 0.01CdSe@PMMA composite shows unique performance with monochromatic green color emission and the highest quantum yield.
研究不足
The study focuses on the optical and structural characteristics of CdSe/PMMA nanocomposites but does not extensively explore their electrical properties or long-term stability under operational conditions.
1：Experimental Design and Method Selection:
The study involved the fabrication of CdSe/PMMA nanocomposites using a casting technique to explore their optical and structural characteristics.
2：Sample Selection and Data Sources:
CdSe quantum dots were synthesized and mixed with PMMA in different ratios to form nanocomposite films.
3：List of Experimental Equipment and Materials:
Instruments used included a diffractometer (X’pert MPD, Philips), high resolution scanning electron microscope (HRSEM, JSM-6510A, Jeol), high resolution transmission electron microscope (JEM-2100-Jeol HRTEM), UV/Vis spectrophotometer (UV-1800, Shimadzu), and luminescence spectrophotometer (RF-1501, Shimadzu).
4：Experimental Procedures and Operational Workflow:
CdSe QDs were synthesized, mixed with PMMA, and cast into films. The films were then characterized using XRD, TEM, SEM, UV/Vis spectroscopy, and FL measurements.
5：Data Analysis Methods:
The data were analyzed using Rietveld profile method for XRD, and Tauc’s relation was applied to UV/Vis spectra to determine the direct energy band gap.
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