Background and Motivation for Thin-Film Solar-cell Development | p. 1 |
Development of Modern Civilizaiton via Energy Revolutions | p. 2 |
3E-Trilemma and New Energy Strategy | p. 2 |
Key Issues for PV Technology Developments | p. 7 |
Future Prospect and Roadmap for Solar Photovoltaics | p. 11 |
References | p. 14 |
Recent Advances and Future Opportunities for Thin-Film Solar Cell | p. 15 |
Introduction | p. 15 |
First-Generation Thin-Film Solar Cells | p. 16 |
Amorphous Silicon Alloy Solar Cells | p. 17 |
Multijunction Cells | p. 18 |
Single- and Double-Junction Cells | p. 19 |
Growth of a-Si:H Alloy | p. 20 |
Photodegradation of a-Si Solar Cells | p. 21 |
Technology Development | p. 23 |
Research Issues in a-Si: H-Based Materials and Devices | p. 24 |
CdTe-Based Thin-Film Solar Cells | p. 24 |
Device Fabrication Process | p. 24 |
Cell and Module Efficiency | p. 26 |
Technology Development | p. 26 |
Key Issues for Future R&D | p. 28 |
CuInSe2(CIS)-Based Thin-Film Solar Cells | p. 28 |
Device Fabrication | p. 28 |
Technology Development | p. 30 |
Key Research Issues | p. 31 |
Next Generation of Thin-Film Solar Cells | p. 31 |
Thin-Film Silicon Solar Cells | p. 31 |
Microcrystalline-Silicon Thin Film (µc-Si) | p. 33 |
Thin-Film GaAs Solar Cells | p. 33 |
Dye-Sensitized TiO2 Thin-Film Solar Cells | p. 34 |
Novel Ternary and Multinary Compounds | p. 35 |
Organic Solar Cells | p. 37 |
Novel Approaches to High-Efficiency Thin-Film Solar Cells | p. 38 |
References | p. 39 |
Electrical and Optical Properties of Amorphous Silicon and Its Alloys | p. 43 |
Simplistic Model for Band-Edge Electronic Properties | p. 43 |
Fundamental Aspects Near the Mobility Edge | p. 43 |
Optical Absorption Spectrum | p. 46 |
Electronic Conduction | p. 52 |
Mobility and Band-Edge Parameters in Amorphous Silicon Alloys | p. 57 |
Evaluation Procedure | p. 57 |
Carrier Mobility in Amorphous Silicon Alloys | p. 58 |
Photoinduced Structural Change | p. 63 |
Photoinduced Changes in Electronic Properties | p. 63 |
Photoinduced Structural Change and Its Physical Implications | p. 63 |
Concluding Remarks | p. 67 |
References | p. 67 |
Preparation and Properties of Nanocrystalline Silicon | p. 69 |
History of Nanocrystalline Silicon | p. 69 |
Preparation of Nanocrystalline Silicon | p. 70 |
Understanding Nanocrystalline Silicon Growth | p. 72 |
High-Rate Growth of Nanocrystalline Silicon | p. 77 |
Structural Properties of Nanocrystalline Silicon | p. 79 |
Optical and Electrical Properties of Nanocrystalline Silicon | p. 82 |
References | p. 87 |
Key Issues for the Efficiency Improvement of Silicon-Based Stacked Solar Cells | p. 90 |
Principle of the Stacked Solar Cell | p. 91 |
An Optimum Design of the a-Si Top Cell | p. 96 |
Poly-Si and µc-Si Bottom-Cell Technology | p. 98 |
References | p. 103 |
Development of Amorphous-Silicon Single-Junction Solar Cells and Their Application Systems | p. 105 |
Introduction | p. 105 |
Key Technologies and Approaches Towards Large-Scale, High-Efficiency, a-Si:H Single-Junction Solar Cells | p. 106 |
Basic Cell Structure and Process | p. 106 |
Key Manufacturing Technology and Device Design | p. 107 |
Module Performance of a-Si:H Single-Junction Solar Cells | p. 110 |
Applications of Large-Scale a-Si:H Solar Modules and Systems | p. 114 |
Application to the Construction Material, ALC Panel Integrating a-Si:H PV Modules | p. 115 |
See-Through-Type a-Si:H Solar Modules | p. 116 |
Conclusion | p. 119 |
References | p. 120 |
The Production of a-Si:H/a-SiGe:H/a-SiGe:H Stacked Solar-Cell Modules and Their Applications | p. 121 |
R&D Work with Small-Area Cells | p. 121 |
Low-Pressure Microwave PCVD Method | p. 122 |
Graded-Bandgap Profiling in a-SiGe:H | p. 125 |
Suppression of Light-Induced Degradation and Improved Performance | p. 126 |
Mass Production of a-Si:H/a-SiGe:H/a-SiGe:H Stacked Solar Cells and the Product Outlines | p. 129 |
The Roll-to-Roll CVD Method | p. 132 |
Characteristics of Slab Cells and Modules | p. 134 |
Light-Soaking Testing | p. 136 |
Summary | p. 137 |
References | p. 137 |
Low-Temperature Fabrication of Nanocrystalline-Silicon Solar Cells | p. 139 |
Why Nanocrystalline-Silicon Solar Cells? | p. 139 |
Low-Temperature Process for Nanocrystalline-Silicon Solar Cells | p. 141 |
Substrate Technology | p. 145 |
Future Prospect of Nanocrystalline-Silicon Solar Cells | p. 147 |
References | p. 148 |
Mass Production of Large-Area Integrated Thin-Film Silicon Solar-Cell Module | p. 150 |
Introduction | p. 151 |
Performance and Production of a-Si Modules | p. 151 |
Performances and Production of a-Si/Thin-Film c-Si Hybrid Solar Module | p. 155 |
Future Business Plan | p. 161 |
References | p. 162 |
Properties of Chalcopyrite-Based Materials and Film Deposition for Thin-Film Solar Cells | p. 163 |
Cu-Chalcopyrite Compounds | p. 163 |
Material Properties | p. 164 |
Phase Diagram | p. 164 |
Defects and Impurities | p. 167 |
Alloys | p. 171 |
Growth Methods for Thin Films | p. 171 |
Vacuum Evaporation Methods | p. 173 |
Reactive Film Formation | p. 175 |
Annealing of Stacked Elemental Layers | p. 176 |
Epitaxy, Chemical Vapor Deposition, and Vapor Transport Processes | p. 177 |
Other Techniques | p. 177 |
References | p. 178 |
Development of Cu(InGa)Se2 Thin-Film Solar Cells | p. 183 |
High-Efficiency Techniques | p. 183 |
Efficiencies of Small-Area CIGS Thin-Film Solar Cells | p. 183 |
In-situ Monitoring of Composition Ratio | p. 186 |
Buffer Layers | p. 188 |
Conduction Band Offset | p. 194 |
Flexible Substrates | p. 195 |
Fabrication Technologies of Large-Area CIGS-based Modules | p. 197 |
Introduction | p. 197 |
Fabrication Technologies | p. 202 |
Durability | p. 206 |
References | p. 208 |
Expanding Thin-Film Solar PV System Applications | p. 211 |
Introduction | p. 211 |
Comparison Between Crystalline Solar Cells and Thin-Film Solar Cells with Respect to Applications | p. 212 |
Applications to Electrical Devices | p. 213 |
Applications to Standalone Systems | p. 215 |
See-Through a-Si Solar Cells | p. 216 |
Flexible a-Si Solar Cells | p. 218 |
Applications for Residential Housing (Building Integrated PV Modules) | p. 219 |
Present Market for PV Housing | p. 219 |
Development BIPV Modules | p. 220 |
Industrialization of BIPV Modules | p. 222 |
Application to Semi-Large-Scale Photovoltaic Systems | p. 223 |
Future Prospects | p. 227 |
Applications of Flexible and Lightweight Modules | p. 227 |
Applications of BIPV Modules | p. 227 |
Applications of Power-Generating Use - GENESIS Project | p. 229 |
References | p. 230 |
Future Prospects for Photovoltaic Technologies in Japan | p. 231 |
Current Status of Photovoltaic Industrialization | p. 231 |
Recent Achievements of the PV R&D in the New Sunshine Project | p. 235 |
New Strategy and Future Prospects for PV Industry in Japan | p. 237 |
References | p. 240 |
Index | p. 241 |
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