共掺杂玻璃的白光发射与能量传递过程
发布时间：2021-09-05 11:12
白光发光二极管为固态照明领域提供了新的环保机遇,大大降低了全球能源消耗和二氧化碳气体排放。另外,它们还展现出低成本,易于微调,可加工性,低毒性,设备制造有足够的灵活性等优点。由于它们在持久性、性能和制造方面不断提高,因此需要不断的研究以获得更好的材料设计和制造方案。目前,白光发光二极管在人工照明、显示系统、荧光生物医学工具等领域都有了技术进步。因此,它们已经成为下一代固态照明应用的一个有前途的组成部分。在此,制备了Bi3+/Eu3+单掺杂和共掺杂的SiO2-Al2O3-CaO-B2O3-La2O3-K2O玻璃,并系统地研究了其发光性能、能量转移和热稳定性。分析了Bi3+的发射带与Eu3+的激发带之间的光谱重叠,以及Bi3+的衰减曲线,以检验Bi3+到Eu3+的能量传递的存在。随着Eu3+浓度的增加,可调发射颜色可实现从蓝绿色到白色,然后再到橙红色。在333nm的激发下可以获得CIE坐标为（0.348,0.333）的白光发射。通过温度相关发射光谱,研究了Bi3+/Eu3+的抗热猝灭性能。这些结果表明,这些玻璃是可用于无有机树脂的W-LEDs的单相白光发光材料。摘要以硼硅酸盐玻璃为基体,以...
【文章来源】：浙江师范大学浙江省
【文章页数】：56 页
【学位级别】：硕士
【文章目录】：
ABSTRACT
摘要
Chapter 1.Introduction
1.1 WLEDs(white light emitting diodes WLEDs)
1.1.1 Overview
1.1.2 Progress in the efficiency of WLEDs
1.1.3 Approaches and disadvantages of WLEDs
1.2 Luminescent materials
1.2.1 Luminescence
1.2.2 Energy transfer
1.2.3 Thermal quenching
1.3 Luminescent ions
1.3.1 Rare earth ions
1.3.2 Eu~(3+),Bi~(3+)and Mn~(2+)ions
1.4 Luminescent glasses
1.4.1 Advantages and structural properties
1.4.2 Preparation method
1.5 Characterization technique
1.5.1 Measurement of the absorption spectra:the spectrometer
1.5.2 Measurement of the luminescent: the spectrofluorimeter
Chapter 2.Energy transfer and white luminescence in Bi~(3+)/Eu~(3+)luminescent oxide glasses
2.1 Introduction
2.2 Experimental
2.2.1 Chemical reagents and synthesis way
2.2.2 Characterization techniques
2.3 Result and discussion
2.3.1 Photoluminescent properties of Bx glasses
2.3.2 Photoluminescent properties of E1.0 glass
2.3.3 Photoluminescent properties of BEy glasses
2.3.4 Thermal quenching properties of BE0.3 glass
2.4 Conclusion
Chapter 3.A New Self-Referencing Optical Thermometry Based on Tb~(3+)-Mn~(2+)Co-dopedBorosilicate Bulk Glasses
3.1 Introduction
3.2 Experimantal
3.2.1 Chemical reagents and synthesis way
3.2.2 Characterisation techniques
3.3 Results and discussions
3.3.1 Transmittance and XRD-patterns
3.3.2 Photoluminescence properties of G-Tx and G-My glasses
3.3.3 Photoluminescent properties of G-TMy glasses
3.3.4 Thermal sensing properties of G-TM2.0 glass
3.4 Conclusion
Chapter 4.Summary
4.1 Summary
References
Acknowledgement
List of publications
附件
本文编号：3385241
【文章来源】：浙江师范大学浙江省
【文章页数】：56 页
【学位级别】：硕士
【文章目录】：
ABSTRACT
摘要
Chapter 1.Introduction
1.1 WLEDs(white light emitting diodes WLEDs)
1.1.1 Overview
1.1.2 Progress in the efficiency of WLEDs
1.1.3 Approaches and disadvantages of WLEDs
1.2 Luminescent materials
1.2.1 Luminescence
1.2.2 Energy transfer
1.2.3 Thermal quenching
1.3 Luminescent ions
1.3.1 Rare earth ions
1.3.2 Eu~(3+),Bi~(3+)and Mn~(2+)ions
1.4 Luminescent glasses
1.4.1 Advantages and structural properties
1.4.2 Preparation method
1.5 Characterization technique
1.5.1 Measurement of the absorption spectra:the spectrometer
1.5.2 Measurement of the luminescent: the spectrofluorimeter
Chapter 2.Energy transfer and white luminescence in Bi~(3+)/Eu~(3+)luminescent oxide glasses
2.1 Introduction
2.2 Experimental
2.2.1 Chemical reagents and synthesis way
2.2.2 Characterization techniques
2.3 Result and discussion
2.3.1 Photoluminescent properties of Bx glasses
2.3.2 Photoluminescent properties of E1.0 glass
2.3.3 Photoluminescent properties of BEy glasses
2.3.4 Thermal quenching properties of BE0.3 glass
2.4 Conclusion
Chapter 3.A New Self-Referencing Optical Thermometry Based on Tb~(3+)-Mn~(2+)Co-dopedBorosilicate Bulk Glasses
3.1 Introduction
3.2 Experimantal
3.2.1 Chemical reagents and synthesis way
3.2.2 Characterisation techniques
3.3 Results and discussions
3.3.1 Transmittance and XRD-patterns
3.3.2 Photoluminescence properties of G-Tx and G-My glasses
3.3.3 Photoluminescent properties of G-TMy glasses
3.3.4 Thermal sensing properties of G-TM2.0 glass
3.4 Conclusion
Chapter 4.Summary
4.1 Summary
References
Acknowledgement
List of publications
附件
本文编号：3385241
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