声明
摘要
Abstract
Abbreviations
Content
Chapter 1
1.1 Introduction
1.1.1 Solid-state lighting
1.1.2 Semiconductor P-N Junction diode
1.2 Generation of white light by LED
1.2.1 Red,Green,and Blue LED chips
1.2.2 Blue LED chips and yellow phosphors
1.2.3 UV-LED chip and RGB phosphors
1.3 Phosphor-converted Light Emitting Diodes(PC-LEDs)
1.3.1 Mechanism of luminescent by Eu2+ ion
1.3.2 Configuration coordinate model
1.3.3 CIE chromaticity coordinates and the color temperature
1.3.4 Color rendering index and luminous efficacy
1.4 Ceramic Powder Synthesis
1.4.1 Pechini sol-gel(PSG)or polymer-metal complex method
1.4.2 Co-precipitation(CO)method
1.4.3 Sol-gel(SG)method
1.4.4 Solid-state(SS)reaction method
1.5 (Oxo)nitridosilicates phosphors for LEDs
1.5.1 Baud gaps and absorption edges of(oxy)nitrides
1.6 SrSi2O2N2(SSON)phosphors
1.6.1 Crystal structure
1.6.2 Photoluminescence properties
1.7 Sr2SiO4(SSO)phosphor
1.7.1 Crystal structure
1.7.2 Photoluminescence properties
1.8 The significance,innovation of this investigation and content of the thesis
1.8.1 The significance of the investigation
1.8.2 The innovation of the investigation
1.8.3 Content of the thesis
References
Chapter 2
2.1 Experiments
2.1.1 Chemicals used
2.1.2 Instruments employed
2.2 Characterization methods
2.2.1 Thermal Analysis
2.2.2 X-Ray Diffraction(XRD)
2.2.3 Scanning Electron Microscopy(SEM)
2.2.4 Particles size analysis
2.2.5 Excitation and emission spectra
2.2.6 Quantum efficiency(QE)
2.2.7 Fourier Transform Infrared Spectroscopy(FTIR)
References
Chapter 3 Synthesis and photoluminescent properties of Sr(1-x)Si2ON2:xEu2+phosphor prepared by polymer-metal complex method for WLEDs applications
3.1 Introduction
3.2 Experimental
3.2.1 Preparation
3.2.2 Characterization
3.3 Results and Discussion
3.4 Conclusions
References
Chapter 4 Synthesis and photoluminescent properties of Sr(1-x)Si2O2N2:xEu2+phosphor for WLEDs applications
4.1 Introduction
4.2 Experimental
4.2.1 Preparation
4.2.2 Characterization
4.3 Results and Discussion
4.4 Conclusion
References
Chapter 5 Role of synthesis method and α’,β-Sr(2-x)SiO4:xEu2+phases on the photoluminescent properties of Sr(1-x)Si2O2N2:xEu2+phosphors
5.1 Introduction
5.2 Experimental
5.2.1 Preparations
5.2.2 Characterization
5.3 Results and Discussion
5.4 Conclusions
References
Chapter 6 Conclusions and prospects
6.1 Conclusions
6.2 Prospects
List of Figures
List of Tables
Publications and research achievements during the Ph.D.Study
Acknowledgments