研究目的
Investigating the optical properties of Er3+ substituted Sr0.7Bi2.2Nb2O9 ceramics for optoelectronic-device application.
研究成果
The Er3+ Substituted Sr0.7Bi2.2Nb2O9 opto-electro material shows strong optical properties under 250 nm light excitation, making it suitable for high temperature optical sensors and optoelectronic-device applications.
研究不足
The study focuses on the optical properties and does not extensively explore the ferroelectric properties of the ceramics. The potential for optimization in the synthesis process to enhance optical properties is not discussed.
1：Experimental Design and Method Selection:
Polycrystalline Er-modified bismuth strontium niobate (Sr
2：7Bi2-xErxNb2O9) samples were prepared using solid state reaction sintering process. Sample Selection and Data Sources:
High purity SrCO3, Bi2O3, Er2O3 and Nb2O5 powders were used.
3：List of Experimental Equipment and Materials:
Powder X-ray diffraction was done with Cu Kα incident radiation. The photoluminescence (PL) spectra at RT were measured using Fluor Log Horiba, JOBINYVON.
4：Experimental Procedures and Operational Workflow:
The powders were mixed and ground, pre-sintered at 900oC for 30 min, cold pressed into disc-shaped pellets, and sintered at 1200°C for 2h.
5：2h. Data Analysis Methods:
5. Data Analysis Methods: Structural analysis was carried out on the most intense peak corresponding to (115) reflection.
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