研究目的
Investigating the spectroscopic properties and temperature sensing capabilities of Er3+ and Er3+/Yb3+ doped zinc tellurite glasses for applications in solid-state lighting and non-contact optical thermometry.
研究成果
Er3+ and Er3+/Yb3+ doped zinc tellurite glasses exhibit promising properties for solid-state lighting and non-contact optical thermometry applications, with Er3+/Yb3+ doped glasses showing superior sensitivity. The study highlights the potential of these materials for advanced optical applications, suggesting further research into optimizing their composition and properties.
研究不足
The study is limited to the specific compositions of Er3+ and Er3+/Yb3+ doped zinc tellurite glasses and their spectroscopic properties under controlled laboratory conditions. Potential areas for optimization include the exploration of other dopant concentrations and glass compositions for enhanced performance.
1：Experimental Design and Method Selection
The study involved the preparation of Er3+ and Er3+/Yb3+ doped zinc tellurite glasses using the melt quenching technique. Spectroscopic properties were analyzed through absorption spectroscopy, luminescence spectroscopy, and CIE-1931 color chromaticity measurements.
2：Sample Selection and Data Sources
High purity powders of TeO2, ZnO, Er2O3, and Yb(NO3)3.5H2O were used to prepare the glasses. The composition was (0.80)TeO2 + (0.20-x-y)ZnO + xEr2O3 + y(Yb(NO3)3.5H2O), with specific x and y values for Er3+ and Er3+/Yb3+ doped glasses.
3：List of Experimental Equipment and Materials
UV-Visible spectrophotometer (Varian Cary-100 Bio), Princeton Instruments monochromator (model SP2500i), silicon detector (SI 440 from Acton series), InGaAs detector (ID441-C from Acton series), CNI MDL-H-975 model continuous wave (CW) diode laser, power meter (FieldMaxII - TOP from Coherent), illuminance meter (AsenseTek Lighting Passport Model).
4：Experimental Procedures and Operational Workflow
The glasses were melted in a platinum crucible, poured onto a preheated stainless steel template, annealed, and then cut and polished for measurements. Temperature-dependent UC-emission spectra were measured under 975 nm laser excitation.
5：Data Analysis Methods
The fluorescence intensity ratio (FIR) technique was used to analyze the temperature sensing properties, with data analyzed using logarithmic and exponential fitting methods.
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Diode laser
MDL-H-975
CNI
Excitation source for upconversion luminescence measurements.
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Power meter
FieldMaxII - TOP
Coherent
Determination of the power of the laser beam.
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UV-Visible spectrophotometer
Cary-100 Bio
Varian
Measurement of absorption spectra in the UV-Visible range.
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Monochromator
SP2500i
Princeton Instruments
Collection of upconversion luminescence spectra.
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Silicon detector
SI 440
Acton series
Detection of emissions in the visible region.
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InGaAs detector
ID441-C
Acton series
Detection of infrared luminescence spectra.
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Illuminance meter
Lighting Passport
AsenseTek
Determination of color chromaticity coordinates (CIE-1931).
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