Lecture
This lecture discusses the design of photovoltaic cells for a Laser Power Converter (LPC) system. The instructor explains how a laser emits monochromatic light to power solar cells, which convert this light into electrical energy. The lecture emphasizes the importance of selecting the appropriate semiconductor materials based on the laser's wavelength to optimize efficiency. The instructor compares the efficiency of solar cells under solar illumination versus monochromatic light, highlighting that the efficiency can reach up to 80% when designed correctly for monochromatic light. The discussion includes guidelines for designing single-junction and multi-junction cells, noting that multi-junction cells can generate higher voltages but may reduce current. The lecture concludes with practical examples of multi-junction designs and their potential to achieve significant voltage outputs while maintaining efficiency. Overall, the lecture provides a comprehensive overview of the principles and considerations involved in designing photovoltaic cells for laser applications.