研究目的
Investigating the color tunable upconversion emission and the optical thermometry properties of Yb3+, Ho3+, Er3+ doped Gd2O3 nanoparticles phosphors prepared by pulsed laser ablation in water.
研究成果
The mixture phosphors of Yb3+/Er3+ and Yb3+/Ho3+ doped Gd2O3 nanoparticles exhibit color tunable upconversion emission from green to red and show promise for applications in multicolor luminescent devices and non-contact temperature sensors.
研究不足
The study focuses on the synthesis and optical properties of Gd2O3 nanoparticles doped with Yb3+, Ho3+, and Er3+ ions, but does not explore their application in specific devices or under extreme conditions.
1：Experimental Design and Method Selection:
Pulsed laser ablation in liquid followed by solution mixing was used to prepare the mixtures of Gd2O3:Yb3+/Er3+ and Gd2O3:Yb3+/Ho3+ nanoparticles.
2：Sample Selection and Data Sources:
High purity Yb2O3, Ho2O3, Er2O3, Gd2O3 powders were used as raw materials.
3：List of Experimental Equipment and Materials:
Pulsed laser ablation setup, X-Ray diffraction (CuKα1 radiation), Edinburgh Instruments (FLS 920) spectrometer with PMT detector.
4：Experimental Procedures and Operational Workflow:
The solid target was immersed into water and ablated by a pulsed laser. The obtained colloid solutions were mixed by ultrasonic aided mixing process.
5：Data Analysis Methods:
The temperature dependent upconversion emission spectra were recorded and analyzed to derive the fluorescence intensity ratio (FIR).
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Spectrometer
FLS 920
Edinburgh Instruments
Collection of upconversion emission spectra
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Yb2O3
Aladdin
Raw material for doping
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Ho2O3
Aladdin
Raw material for doping
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Er2O3
Aladdin
Raw material for doping
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Gd2O3
Aladdin
Host matrix
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X-Ray diffraction
CuKα1 radiation
Characterization of phase structures
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