研究目的
Investigating the optical and structural properties of curcuminoids extracted from Curcuma longa L. for application in hybrid white light diodes.
研究成果
The study successfully generated white light emission from natural dye extract of turmeric using three extraction methods. The combination of normal and Soxhlet apparatus methods (M3) was found to be the most effective. The white light exhibited desirable chromaticity coordinates and color temperature. The degradation of the dye was partially mitigated using low thermal conductivity materials, with air gap being more effective than glass slide.
研究不足
The study is limited by the degradation of the organic dye due to heat from the LED source, which affects the longevity of the white light emission. The use of low thermal conductivity materials like air gap and glass slide was explored to mitigate this issue.
1：Experimental Design and Method Selection:
Three methods were used to extract curcuminoids from turmeric: normal method (M1), Soxhlet apparatus (M2), and a combination of both (M3). Silica gel was mixed with curcuminoids to resolve stickiness issues.
2：3). Silica gel was mixed with curcuminoids to resolve stickiness issues.
Sample Selection and Data Sources:
2. Sample Selection and Data Sources: Turmeric powder was used as the source material. Methanol was used as the solvent.
3：List of Experimental Equipment and Materials:
CHANZON UV LED ultraviolet chip (wavelength 390 nm, power 10 W), methanol, silica gel, silicon (model BM800-H001), aluminum molds.
4：Experimental Procedures and Operational Workflow:
Curcuminoids were extracted using the three methods, mixed with silica gel, and then encapsulated with silicone rubber. Samples were prepared with different weights of phosphor and subjected to various measurements.
5：Data Analysis Methods:
Absorption, XRD, FTIR, electroluminescence spectra (EL), CIE, CCT, and CRI were measured and analyzed.
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