Ⅱ--Ⅵ族半导体中非简谐声子的拉曼光谱研究

目录

声明

摘要

ABSTRACT

TABLE OF CONTENTS

LIST OF FIGURES

LIST OF TABLE

CHAPTER 1 INTRODUCTION

1．2 INTRODUCTION TO Ⅱ-Ⅵ SEMICONDUCTORS

1．2．1 Cadmium sulfide(CdS)

1．2．2 Cadmium selenide(CdSe)

1．2．3 Zinc Telluride(ZnTe)

1．3 PHONON ANHARMONICITY IN SOLIDS AND PHONON DECAY

1．3．1 Klemens Channel

1．3．2 Riddley Channel

1．3．3 Experimental measurements of phonon anharmonic effects

1．4 INELASTIC LIGHT SCATTERING

1．4．1 Raman spectroscopy

1．5．FINITE DIFFERENCE TIME DOMAIN (FDTD) SIMULATION METHOD

1．6 THESIS ORGANIZATION

REFERENCES

CHAPTER 2 ENHANCED ANHARMONIC PHONON COUPLING AND DECAY DMINATED BY LOW-ENERGY PHONONS IN CdS NANOWIRES

2．1 INTRODUCTION

2．2 EXPERIMENTAL

2．2．1 Synthesis of CdS NWs

2．2．2 Characterizations of CdS NWs

2．3．1 Structural and optical characterization of CdS nanowires

2．3．2 Near resonance Raman scattering of CdS NWs

2．3．3 Temperature dependent Raman scattering of CdS NWs

2．4 CONCLUSIONS

REFERENCES

CHAPTER 3 ANHARMONIC PHONON COUPLING AND PHONON DECAY IN POLYCRYSTALLINE CdSe THIN FILMS

3．1 INTRODUCTION

3．2 EXPERIMENTAL

3．3 FINITE DIFFERENCE TIME DOMAIN (FDTD) SIMULATION

3．4 RESULTS AND DISCUSSION

3．4．1 Raman spectroscopy

3．4．2 Structural and optical properties of AgNPs

3．4．3 FDTD simulations and SERS enhancement

3．4．4 Temperature dependent Raman scattering

3．5 CONCLUSIONS

REFERENCES

CHAPTER 4 STUDY OF STRONG EXCITON-PHONON COUPLING AND DECAY OF OPTICAL PHONONS IN ZnTe THIN FILMS BY RESONANCE RAMAN SCATTERING

4．1 INTRODUCTION

4．2 EXPERIMENTAL

4．2．1 Preparation of ZnTe thin films

4．2．2 Charaeterization of ZnTe thin films

4．3 RESULTS AND DISCUSSION

4．3．1 Resonance Raman scattering in ZnTe thin films

4．3．2 Temperature-dependent Raman scattering in ZnTe film

4．4 CONCLUSIONS

REFERENCES

CHAPTER 5 CONCLUSIONS

5．1 CONCLUSIONS

5．2 RESEARCH INNOVATIONS

ACKNOWLEDGEMENTS

LIST OF PUBLICATINS