研究目的
Investigating the green synthesis of Cr3+ doped Yttrium oxide (Y2O3) nanostructures using Cymbopogon citrates extract as a fuel and their structural and photoluminescence properties for wLEDs applications.
研究成果
The green combustion synthesis of Y2O3:Cr3+ nanophosphors using Cymbopogon citrates extract as fuel successfully produced materials with cubic phase, nano-sized particles, and orange-red emission suitable for display devices. The CIE chromaticity coordinates and CCT values indicate potential applicability in artificial daylight production.
研究不足
The study focuses on the synthesis and characterization of Cr3+ doped Y2O3 nanostructures but does not explore their integration into actual wLED devices or long-term stability under operational conditions.
1：Experimental Design and Method Selection:
Green combustion synthesis method was used to synthesize pure and Cr3+ doped Y2O3 nanostructures.
2：Sample Selection and Data Sources:
Yttrium nitrate and Chromium nitrate were used as sources of Y and Cr, respectively, with Cymbopogon citrates extract as fuel.
3：List of Experimental Equipment and Materials:
Shimadzu Powder X-ray diffractometer, SEM (Hitachi – 3000), TEM (TECNAIF–30), Lamda-35 spectrophotometer, Horiba Flurolog Spectroflourimeter.
4：Experimental Procedures and Operational Workflow:
The synthesis involved mixing Cymbopogon citrates extract with aqueous mixture of yttrium nitrate and chromium nitrate, followed by heating in a furnace at 450 ± 100C, calcination at 700°C for 3 h.
5：Data Analysis Methods:
PXRD for structural analysis, SEM and TEM for morphological studies, DRS for band gap estimation, PL spectroscopy for emission characteristics.
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