Recombination in Solar Cells: Theoretical Aspects.- 1. Introduction.- 2. Conventions Usually Made for p-n Junctions and Solar Cells.- 3. Three Laws of Photovoltaics.- 4. Maximum Power, Recombination and the Ideality Factor.- 5. Junction Currents as Recombination Currents.- 6. Steady-State Recombination Rates at a Given Plane X.- 7. Junction Model and Space-Dependences.- 8. Transition Region Recombination Current Density.- 9. The Bulk-Regions Recombination Current Density.- 10. Summery of p-n Junction Current Densities from Sections 8 and 9.- 11. Configuration and Electrostatics of the Schottky Barrier Solar Cell.- 12. The Place of Recombination Effects in (p-type) Schottky Barrier Solar Cells.- 13. Recombination Currents and Voltage Drops in (p-type) Schottky Barrier Solar Cells.- 14. Conclusion.- A Few More General Topics.- (I) Thermodynamic Efficiency.- (II) Simple Theory to See that an Optimum Energy Gap Exists.- (III) Is Dollars per Peak Watt a Good Unit?.- (IV) Energy Unit for Global Use.- (V) When will Solar Conversion be Economically Viable?.- References.- Schottky Barrier Solar Cells.- 1. Introduction.- 2. The Schottky Barrier Cell Principle.- 2.1. Principle of SBSC Operation.- 2.2. Current Transport Mechanism in Schottky Barriers.- 2.3. Effect of the MIS Potential Distribution upon the Diode Quality Factor n.- 2.4. The MIS SBSC under Illumination.- 2.5. The Minority Carrier MIS SB Cell.- 3. Solar Cell Parameters and Design Considerations.- 3.1. Metal-Semiconductor Barrier Height.- 3.2. Diode Quality Factor n.- 3.3. Interfacial Oxide Thickness.- 3.4. Transmission Properties of the Metal.- 3.5. Spectral Response.- 3.6. Substrate Resistivity.- 3.7. Substrate Thickness.- 3.8. Series Resistance.- 4. Results and Discussion of Typical Silicon MIS Cells.- 4.1. Open Circuit Voltage.- 4.2. Short Circuit Current Density.- 4.3. Fill Factor.- 4.4. Efficiency.- 4.5. The Min MIS Cell.- 4.6. The MIS Inversion Layer Cell.- 4.7. Stability of MIS Solar Cells.- 4.8. The FuturelSÐ