Zaitsev R. Magnetic field application for crystalline silicon solar cells efficiency increase

Object: Photoelectric processes in single-junction silicon solar cells with horizontal diode structure and in single crystal multi-junction silicon solar cells with vertical diode cells before, after and during influence of stationary magnetic field. The purpose: The development of physical and technological bases for new economic methods of crystalline silicon solar cells efficiency increase. Methods: scribing of single-crystal silicon wafers; chemical etching of silicon crystals in HF and NaOH water solutions; silicon solar cells treatment in stationary magnetic field with various nature before and during their illumination by simulated solar radiation with various concentrations; measuring and analytical processing of current-voltage characteristics, photoconductivity, the open circuit voltage decay curves. Results: First invented a method of single-junction silicon solar cells with horizontal diode structure processing in a homogeneous stationary magnetic field, which increases their efficiency. A physical mechanism of discovered effect, which is to increase the minority charge carriers lifetime by restructuring the original point defects and their complexes structure in base crystals. Field of application: solid state physics, semiconductor physics, solar energetics