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Summary
Summary
This book offers a global perspective of the current state of affairs in the field of solar power engineering. In four parts, this well-researched volume informs about:
Established solar PV (photovoltaic) technologies
Third-generation PV technologies based on new materials with potential for low-cost large-scale production
Solar cell technology based on new (third-generation) concepts, such as quantum dot solar cells and nano wire solar cells using silicon and compound semiconductors
Economic implications and effects, as well as policies and incentives in various countries of the world involved with solar energy implementation
In addition to discussing manufacturing facts and implementation issues, this book emphasizes the implications of policy measures in countries with good PV activity, such as Japan, China, India, Germany, Spain, France, Italy, the United States, and Canada. This volume is intended as a reference for a global audience of advanced students and R&D and industry professionals, as well as investors and policy-makers with fundamental knowledge of photovoltaic technology.
Author Notes
Dr. P. Jayarama Reddy is an energy consultant to the solar photovoltaic industry and serves as a board member of several international renewable energy companies related to solar module fabrication, power generation from biomass and municipal solid waste. He is a retired professor of Physics (Sri Venkateswara University, Tirupathi, India) and has worked in various big research laboratories at Cornell University (US), Imperial College London (UK), Charles University (Czech Republic) and Stuttgart University (Germany). Dr. Reddy is a Fellow of the Institute of Physics (UK) and has published a number of papers on polycrystalline thin film solar materials and cells, as well as the book 'Science and Technology of Photovoltaics', published by BS Publications /CRC Press/Balkema.
Table of Contents
Foreword | p. xi |
Acknowledgements | p. xiii |
1 Introduction | p. 1 |
2 Silicon solar cells | p. 9 |
2.1 Introduction | p. 9 |
2.2 Features of standard c-silicon cells | p. 10 |
2.3 Progress in cell efficiency | p. 12 |
2.4 Mono-crystalline Si solar cells | p. 14 |
2.4.1 Buried contact solar cells | p. 14 |
2.4.2 Passivated emitter, rear locally diffused (PERL) cell | p. 15 |
2.4.3 HIT solar cell | p. 18 |
2.4.4 Interdigitated back contract (IBC) solar cells | p. 20 |
2.4.5 Industrial mono-Si solar cells | p. 22 |
2.5 Multi (poly) crystalline silicon solar cells | p. 24 |
2.5.1 EWT and MWT polycrystalline Si cells | p. 25 |
2.5.2 Polycrystalline buried contact solar cells | p. 27 |
2.5.3 EFG and SRG techniques | p. 28 |
2.5.4 PLUTO multi-crystalline Si modules | p. 29 |
2.6 Materials and processing | p. 29 |
2.6.1 Al 2 O 3 deposition for surface passivation | p. 30 |
2.6.2 Inkjet technology for cell fabrication | p. 31 |
2.7 Future for crystalline silicon solar cells | p. 33 |
2.8 Amorphous silicon solar cells | p. 34 |
2.8.1 Overview of technology development | p. 34 |
2.8.2 a-Si:H thin film solar cells | p. 35 |
2.8.3 Microcrystalline (¿c-)Silicon thin film solar cells | p. 37 |
2.8.4 Tandem and multi-junction a-Si:H cells | p. 40 |
2.8.5 Fabrication of a-Si thin film modules | p. 41 |
2.8.6 a-Si/¿c-Si tandem solar cell | p. 43 |
2.8.7 Turnkey systems for a-Si solar cell module production | p. 45 |
2.9 Improving efficiency of Si TF solar cells | p. 46 |
3 Polycrystalline CIGS and CdTe thin film solar cells | p. 61 |
3.1 Introduction | p. 61 |
3.2 Highlights of CIGS and CdTe technologies | p. 61 |
3.3 CIGS thin film solar cells | p. 63 |
3.3.1 Absorber layer deposition | p. 64 |
3.3.2 State-of-the-art technologies | p. 67 |
3.3.3 Band gap engineering of absorber (CIGS) layer | p. 68 |
3.3.4 Novel absorber layers | p. 69 |
3.3.5 Alternative buffer layers | p. 70 |
3.3.6 Fabrication of CIGSS modules | p. 71 |
3.3.7 Flexible CIGS solar devices | p. 72 |
3.3.8 Vacuum-free deposition | p. 72 |
3.4 CdTe thin film solar cells | p. 73 |
3.4.1 CdTe cell structure elements | p. 75 |
3.4.2 Standard module fabrication | p. 76 |
3.4.3 Industrial CdTe modules | p. 77 |
3.4.4 Flexible CdTe solar cells | p. 79 |
3.5 Challenges to be addressed | p. 79 |
3.6 Polycrystalline TF multi junction solar cells | p. 82 |
3.7 Manufacturing cost of thin film modules | p. 83 |
4 Organic and dye-sensitized solar cells | p. 95 |
4.1 Introduction | p. 95 |
4.2 Configuration & principle of organic solar cell | p. 97 |
4.3 Types of organic solar cells | p. 99 |
4.3.1 Single layer organic solar cells | p. 99 |
4.3.2 Bi-layer organic solar cells | p. 100 |
4.3.3 Bulk hetero junction solar cells (BHJ cells) | p. 101 |
4.4 Dye-sensitized nanostructured solar cells | p. 109 |
4.4.1 Configuration of the cell | p. 109 |
4.4.2 Performance of DSSCs | p. 112 |
4.4.3 Dye-sensitized solar modules | p. 113 |
4.5 Lifetimes of polymer cells | p. 114 |
4.6 Manufacturing status of DSC and OPV cells | p. 115 |
4.7 Improving efficiencies | p. 116 |
4.8 Nano-TiO 2 dye/CIGS tandem solar cells | p. 117 |
5 High-efficiency solar devices | p. 129 |
5.1 Introduction | p. 129 |
5.2 III-V multi junction solar cells | p. 129 |
5.2.1 Introduction | p. 129 |
5.2.2 Basic principles of multi-junction solar cells | p. 130 |
5.2.3 Fabrication of Triple-junction solar cells | p. 133 |
5.2.4 Future design considerations | p. 135 |
5.2.5 Metamorphic (lattice-mismatched) solar cells | p. 136 |
5.2.6 Four-junction (terrestrial) solar cells | p. 140 |
5.2.7 Five-and six-junction solar cells | p. 142 |
5.2.8 Prospects for multi junction solar cells | p. 142 |
5.3 High concentration PV technology (HCPV) | p. 143 |
5.3.1 Introduction | p. 143 |
5.3.2 Classification of CPV | p. 143 |
5.3.3 Merits of CPV | p. 144 |
5.3.4 Status of CPV | p. 145 |
5.3.5 Overview of HCPV modules | p. 145 |
5.3.6 Research and development | p. 148 |
5.3.7 Installations with HCPV modules | p. 153 |
5.3.8 Cost benefits | p. 154 |
5.3.9 CPV and cogeneration | p. 154 |
6 New concepts based solar cells | p. 161 |
6.1 Quantum dot solar cells | p. 161 |
6.1.1 Silicon-QD solar cell | p. 163 |
6.1.2 III-V multi junction QD solar cells | p. 165 |
6.2 Nanowire (NW) solar cells | p. 170 |
6.2.1 Silicon NW solar cells | p. 171 |
6.2.2 Compound semiconductor NW solar cells | p. 175 |
6.3 NW-polymer hybrid solar cells | p. 177 |
6.3.1 InP nanowire - polymer (P3HT) hybrid solar cell | p. 178 |
6.3.2 Microcrystalline silicon nanorods/P3HT hybrid solar cells | p. 180 |
6.3.3 TiO 2 nanotube arrays in DSC s | p. 181 |
6.4 Third-generation concepts under development | p. 183 |
6.4.1 Hot Carrier solar cells | p. 183 |
6.4.2 Plasmonic photovoltaics | p. 185 |
6.4.3 Nanostructured materials for thin film solar cells | p. 190 |
6.5 Crystalline silicon on glass (CSG) solar cells | p. 193 |
6.5.1 Production of CSG modules | p. 197 |
7 Policies and Incentives | p. 207 |
7.1 Introduction | p. 207 |
7.2 Incentive mechanisms | p. 208 |
7.3 Policies in selected countries | p. 208 |
Annexure | p. 231 |
Subject index | p. 233 |