研究目的
To investigate the influence of modification of the UCL of Er3+ on their NIR luminescence by changing the PBG position in Bi2Ti2O7: Yb3+, Er3+ inverse opal PBG materials.
研究成果
The research demonstrates that the modification of UCL in Bi2Ti2O7:Yb3+, Er3+ inverse opals through PBG effect can lead to enhanced NIR luminescence. This is attributed to the energy redistribution caused by the suppression of UCL, which increases the population of electrons at the NIR luminescence level. The findings provide a promising method for enhancing NIR luminescence in optoelectronic applications.
研究不足
The study focuses on the modification of UCL and its effect on NIR luminescence in Bi2Ti2O7:Yb3+, Er3+ inverse opals. The potential for optimization in other materials or under different conditions is not explored.
1：Experimental Design and Method Selection:
The Bi2Ti2O7:Yb3+, Er3+ inverse opal PBG materials were prepared using colloidal self-assembled method. The influence of PBG position on UCL and NIR luminescence was investigated.
2：Sample Selection and Data Sources:
PS microspheres of 420 and 480 nm were used to prepare opal templates. Bi2Ti2O7:Yb3+, Er3+ sol was prepared and infiltrated into the opal templates.
3：List of Experimental Equipment and Materials:
Tetrabutyl titanate, Bi(NO3)3.5H2O, Yb2O3, and Er2O3 were used as raw materials. X-ray diffractmeter (D8 ADVANCE), Field Emission Scanning Electron Microscope (QUANTA 650), HITACHIU-4100 spectrophotometer, HITACHIU-F-7000 and FSL-980 spectrophotometer were used for characterization.
4：5H2O, Yb2O3, and Er2O3 were used as raw materials. X-ray diffractmeter (D8 ADVANCE), Field Emission Scanning Electron Microscope (QUANTA 650), HITACHIU-4100 spectrophotometer, HITACHIU-F-7000 and FSL-980 spectrophotometer were used for characterization.
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The PS microspheres were deposited on quartz substrates to form opal templates. The Bi2Ti2O7:Yb3+, Er3+ sol was infiltrated into the templates and sintered to remove PS microspheres, forming inverse opals.
5：Data Analysis Methods:
The UCL and NIR luminescence spectra were measured and analyzed to study the effect of PBG on luminescence properties.
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