Foreword |
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xi | |
Preface |
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xiii | |
About the Authors |
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xvii | |
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1 Introduction---Why Solar Energy? |
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1 | (18) |
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1.1 The Era of Fossil Energy |
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1 | (3) |
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1.1.1 Possible Depletion of Fossil Fuels |
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2 | (1) |
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2 | (1) |
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1.1.3 Dramatic Change of Weather |
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3 | (1) |
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4 | (1) |
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1.3 Solar Energy and Economy |
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5 | (7) |
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6 | (1) |
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1.3.2 Types of Solar Cells |
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6 | (1) |
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1.3.3 Cost Analysis---Grid Parity |
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7 | (3) |
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1.3.4 Cost Analysis---Breakdown of System Cost |
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10 | (1) |
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1.3.5 Forecast and Practical Trends |
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11 | (1) |
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1.4 Move toward Thin-Film Solar Cells |
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12 | (3) |
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1.4.1 Inorganic Versus Organic |
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12 | (2) |
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1.4.2 More Possible Applications |
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14 | (1) |
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15 | (1) |
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16 | (1) |
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17 | (2) |
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2 Light and Its Interaction with Matter |
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19 | (32) |
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19 | (6) |
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19 | (1) |
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19 | (2) |
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2.1.3 Plane-Wave Solution of the Wave Equation |
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21 | (1) |
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2.1.4 Light as a Particle |
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22 | (1) |
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2.1.5 Blackbody Radiation and Solar Spectrum |
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23 | (1) |
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2.1.6 The Brightness and Intensity of Sunlight |
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24 | (1) |
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2.2 Fundamentals of Interaction between Light and Matter |
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25 | (2) |
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2.2.1 Interaction of Electric Fields with Dielectrics |
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26 | (1) |
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2.2.2 Interaction of Light with Magnetic Materials |
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26 | (1) |
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2.2.3 Summary of Light-Matter Interaction without Energy Exchange |
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27 | (1) |
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2.3 Basic Properties of Transparent Materials |
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27 | (16) |
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2.3.1 Reflection and Refraction |
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27 | (1) |
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2.3.1.1 Boundary Conditions for Electric and Magnetic Fields |
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27 | (2) |
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2.3.1.2 Reflection and Transmission of Plane Waves |
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29 | (3) |
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2.3.1.3 Laws of Reflection and Refraction |
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32 | (1) |
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2.3.1.4 Reflection and Transmission Coefficients |
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32 | (2) |
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2.3.1.5 Reflectivity and Ratio of Transmitted Intensity |
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34 | (1) |
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35 | (1) |
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36 | (1) |
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37 | (2) |
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39 | (1) |
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2.3.4 Isotropy and Anisotropy |
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40 | (2) |
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42 | (1) |
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2.3.6 Nonlinear Optics: Energy Up-Conversion and Down-Conversion |
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43 | (1) |
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2.4 Interaction of Light and Matter with Energy Exchange |
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43 | (5) |
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2.4.1 Interaction of Light with Conductors |
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43 | (1) |
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2.4.2 Quantum Concept of an Atomic System |
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44 | (2) |
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2.4.3 Light-Matter Interaction |
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46 | (2) |
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48 | (1) |
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48 | (3) |
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3 Fundamentals of Inorganic Solar Cells |
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51 | (36) |
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3.1 From Atomic Bonds to Energy Bands |
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51 | (1) |
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3.2 Energy Bands from a Quantum Mechanics Point of View |
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52 | (4) |
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3.3 The Energy Band in Semiconductors |
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56 | (3) |
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59 | (2) |
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3.5 Energy Band Diagram of the P-N Junction |
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61 | (1) |
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3.6 Carrier Transport in a P-N Junction |
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62 | (2) |
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62 | (1) |
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62 | (2) |
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64 | (1) |
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65 | (3) |
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3.9 Interaction of Light and Materials |
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68 | (3) |
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3.10 Solar Cell Materials |
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71 | (13) |
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3.10.1 Crystalline Silicon |
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71 | (2) |
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73 | (3) |
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76 | (2) |
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3.10.4 Cu-In-Ga-Se (CIGS) |
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78 | (3) |
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3.10.5 Polymer Solar Cell Materials |
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81 | (3) |
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84 | (1) |
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85 | (2) |
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87 | (30) |
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4.1 Bonding and Structure of Organic Molecules |
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88 | (1) |
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4.2 Properties of Organic Molecules |
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89 | (1) |
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4.3 Optical Properties of Organic Materials |
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89 | (15) |
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4.3.1 Absorption Properties |
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91 | (6) |
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97 | (7) |
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4.4 Band Gap of Organic Materials |
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104 | (3) |
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4.5 Electrical Conducting Properties of Organic Materials |
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107 | (4) |
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4.6 Suitable Organic Materials for Solar Cell Applications |
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111 | (2) |
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113 | (1) |
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113 | (4) |
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5 Interface between Organic and Inorganic Materials |
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117 | (16) |
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5.1 Interface between Transparent Electrode and Substrate |
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119 | (2) |
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5.2 Interface between Transparent Electrode and an Active Layer |
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121 | (1) |
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5.3 Interface between Donor and Acceptor of Active Layer |
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122 | (3) |
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5.4 Interface between Active Layer and Metal Electrode |
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125 | (1) |
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5.5 Impedance Characteristics at the Interface |
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126 | (4) |
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130 | (1) |
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131 | (2) |
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133 | (32) |
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133 | (1) |
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134 | (10) |
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6.2.1 p-n Junction in Equilibrium |
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134 | (3) |
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6.2.2 Current-Voltage Characteristics |
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137 | (3) |
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6.2.3 Photovoltaic Current-Voltage Characteristics |
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140 | (3) |
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6.2.4 Series and Shunt Resistances |
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143 | (1) |
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6.3 Crystalline Silicon Solar Cells |
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144 | (5) |
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6.4 Thin-Film Solar Cells |
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149 | (11) |
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6.4.1 Amorphous Silicon-Based Thin-Film Solar Cells |
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150 | (3) |
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6.4.2 CdTe Thin-Film Solar Cells |
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153 | (3) |
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6.4.3 CuInSe2-Based Thin-Film Solar Cells |
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156 | (4) |
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160 | (1) |
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160 | (2) |
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162 | (3) |
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165 | (26) |
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7.1 Dye-Sensitized Solar Cell |
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165 | (5) |
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7.1.1 Structure of the DSSC |
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165 | (1) |
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7.1.2 Principle of the DSSC and Development of the Dye |
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166 | (3) |
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7.1.3 Solid-State Dye-Sensitized Solar Cell |
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169 | (1) |
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7.2 Organic Molecule Solar Cell |
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170 | (3) |
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173 | (13) |
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7.3.1 Principle of the Polymer Solar Cell |
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174 | (3) |
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7.3.2 Polymer-Fullerene Solar Cell |
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177 | (2) |
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7.3.3 Effect of Active Layer Morphology on the Performance of Solar Cells |
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179 | (3) |
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7.3.4 Polymer:Semiconducting Nanoparticle Solar Cell |
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182 | (4) |
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7.4 Scale-Up, Stability, and Commercial Development of Organic Solar Cells |
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186 | (1) |
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187 | (2) |
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189 | (2) |
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8 Organic-Inorganic Hybrid Solar Cells |
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191 | (60) |
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8.1 Fundamental Concepts of Organic-Inorganic Hybrid Solar Cells |
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191 | (2) |
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8.2 Sandwiched Structures of the Organic-Inorganic Hybrid Solar Cells |
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193 | (6) |
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8.2.1 Fabrication of Sandwiched Structures |
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193 | (2) |
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8.2.2 Performance of Organic-Inorganic Hybrid Solar Cells with Sandwiched Structures |
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195 | (3) |
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8.2.3 Crystal Phase of Metal Oxides Used for Organic-Inorganic Hybrid Solar Cells |
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198 | (1) |
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8.3 Effect of Mixed-Oxide Modification on Organic-Inorganic Hybrid Solar Cells |
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199 | (11) |
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8.3.1 Effect of Mixed Oxide on P3HT:PCBM-Inorganic Hybrid Solar Cells |
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202 | (3) |
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8.3.2 Effect of Mixed Oxides on PV2000-Inorganic Hybrid Solar Cells |
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205 | (2) |
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8.3.3 Enhancement of Optical Absorption and Incident Photon-to-Electron Conversion Efficiency |
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207 | (3) |
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8.4 Improvement of Stability |
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210 | (4) |
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8.4.1 Improvement of Stability Using Mixed Oxides of WO3 and V2O5 |
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210 | (2) |
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8.4.2 Improvement of Stability Using Sol-Gel Processed CuOx |
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212 | (2) |
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8.5 Organic-Nanostructured-Inorganic Hybrid Solar Cells |
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214 | (19) |
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8.5.1 Organic-ZnO Nanorod Hybrid Solar Cells |
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215 | (1) |
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8.5.1.1 Growth of ZnO Nanorods |
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215 | (2) |
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8.5.1.2 Influence of Drying Time |
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217 | (3) |
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8.5.1.3 Effect of Additional PCBM Clusters Deposited on ZnO Nanorod Arrays |
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220 | (5) |
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8.5.2 Effect of Additional Layer of TiO2 Rods Deposited on ZnO Film |
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225 | (1) |
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8.5.2.1 Effect of NiO Layer |
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226 | (1) |
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8.5.2.2 Effect of TiO2 Nanorods |
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226 | (3) |
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8.5.2.3 Influence of TiO2 Nanorods on the Surface Morphology |
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229 | (1) |
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8.5.2.4 Overall Effect of TiO2 Nanorods on the Device Characteristics |
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229 | (4) |
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8.6 Hybrid Solar Cells Using Low-Bandgap Polymers |
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233 | (3) |
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8.6.1 Low-Bandgap Polymers with Sandwiched Structure |
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233 | (1) |
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8.6.2 Improved Stability with Low-Bandgap Polymers in the Sandwiched Structure |
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233 | (3) |
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8.7 Si Nanowire-Organic Hybrid Solar Cells |
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236 | (9) |
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8.7.1 Fabrication of SiNWs |
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237 | (1) |
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8.7.2 The Fabrication of SiNW-Organic Hybrid Solar Cells |
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238 | (1) |
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8.7.3 Characteristics of SiNW-Organic Hybrid Solar Cells |
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239 | (2) |
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8.7.4 The Influence of Si NW Length |
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241 | (4) |
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245 | (4) |
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249 | (2) |
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9 Outlook for Hybrid Solar Cell |
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251 | (6) |
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254 | (1) |
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255 | (2) |
Index |
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257 | |