声明
摘要
Abstract
Chapter Ⅰ Introduction
1.1 Energy crisis in the world
1.2 Solar Spectrum
1.3 Basics of solar cell
1.4 Development of solar cells
1.5 Type Ⅱ core/shell nanowire heterostructures
1.5.1 Semiconductor heterostructures
1.5.2 Type Ⅱ heterostructure materials
1.6 Type Ⅱ core/shell nanowire solar cells
1.7 Thesis structure
References
Chapter Ⅱ Growth method and characterization techniques
2.1 Nanowires growth method
2.2 Characterization techniques
2.2.1 Scanning electron microscope
2.2.2 Energy dispersive X-ray spectroscopy
2.2.3 Transmission electron microscopy
2.2.4 X-Ray diffraction
2.2.5 Photoluminescence
2.2.6 UV-vis Absorption Spectroscopy
References
Chapter Ⅲ Controlled growth of ZnO nanowire arrays
3.1 Synthesis of ZnO nanowire arrays
3.2 Controlled growth of ZnO nanowire arrays
3.2.1 Effect of growth temperature on ZnO nanowire arrays
3.2.2 Effect of oxygen flow rate on ZnO nanowire arrays
3.2.3 Effect of Zn vapor pressure On ZnO nanowire arrays
3.3 Characterization of ZnO nanowire arrays
3.3.1 Morphology
3.3.2 Material Structures
3.3.3 Optical properties
3.4 Conclusions
References
Chapter Ⅳ Synthesis of ZnO/ZnSe and ZnO/CdSe coaxial nanowires for photovoltaic applications
4.1 Control growth of ZnSe shell layer on ZnO nanowire arrays
4.1.1 Effect of temperature on the ZnSe shelllayer
4.1.2 Effect of growth time on the ZnSe shelllayer
4.1.3 Effect of distance from source on ZnSe shelllayer
4.2 Characterization and optical analysis of type-Ⅱ ZnO,ZnSe core shell nanowwire
4.2.1 Morphology
4.2.2 Material structure
4.2.3 Optical properties
4.3 Control growth of CdSe shell layer On ZnO nanowire arrays
4.3.1 Effect of temperature on the CdSe shell layer
4.3.2 Effect of growth time on the CdSe shell layer
4.3.3 Effect of distance from source on CdSe shell layer
4.4 Characterization and optical analysis of type-Ⅱ ZnO/CdSe core/shell nanowires
4.4.1 Morphology
4.4.2 Material structure
4.4.3 Optical properties
4.5 Conclusion
References
Chapter Ⅴ Synthesis of ternary alloy ZnO/ZnCdSe coaxial nanowires for photovoltaic applications
5.1 Controlled growth of ZnCdSe shell layer on ZnO nanowire arrays
5.1.1 Effect of growth temperature on the ZnCdSe shell layer
5.1.2 Effect of growth time on the ZnCdSe shell layer
5.1.3 Efleet of distance from source on the ZnCdSe shell layer
5.2 Characterization and optical analysis of type-Ⅱ ZnO/ZnCdSecore/shell nanowires
5.2.1 Morphology
5.2.2 Material structure
5.2.3 Optical properties
5.3 ZnO/ZnxCd1-xSe core/shell nanowires solar cell fabrication
5.4 Solar cell performance
5.4.1 Ⅰ-Ⅳ characteristics and IPCE
5.4.2 Time resolved photoluminescence
5.5 Conclusions
References
Chapter Ⅵ Summary
References
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ACKNOWLEDGMENT
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