Chapter 1 Introduction
1.1 Porous materials
1.1.1 Porous silicon thin films
1.1.2 Zeolites
1.2 Luminescence centers in porous materials
1.2.1 Near infrared luminescence of Bi and rare earth ions in porous materials
1.2.2 Ag clusters in zeolites
1.3 Chapter overview
1.3.1 Photoluminescence properties of Bi doped oxidized porous silicon
1.3.2 Photosensitization of Eu3+ by silver clusters in zeolite Y
1.3.3 Enhanced red luminescence of Sm3+ in zeolite A by silver ions
Chapter 2 Luminescence properties of Bi-doped oxidized porous silicon thin films
2.1 Introduction
2.2 Experiment details
2.3 Results and discussion
2.3.1 Bi concentration dependence of the NIR PL
2.3.2 Oxidation temperature dependence of the NIR PL
2.3.3 Excitation wavelength dependence of the NIR PL
2.3.4 Annealing conditions dependence of PL
2.3.5 Temperature dependence of the NIR PL
2.4 Conclusion
Chapter 3 Photosensitization of Eu ions by Ag clusters in zeolite Y
3.1 Introduction
3.2 Experimental details
3.3 Results and discussion
3.3.1 Ag singly doped zeolite Y
3.3.2 Eu and Ag co-doped zeolite Y
3.4 Conclusion
Chapter 4 Enhanced red photoluminescence of Sm ions in zeolite A by interaction with Ag ions
4.1 Introduction
4.2 Experimental details
4.3 Results and discussion
4.3.1 Ag singly doped zeolite A
4.3.2 Sm and Ag singly co-doped zeolite A
4.4 Conclusion
Chapter 5 Conclusion