A Three-Dimensional Transient Study of a Polycrystalline Silicon Solar Cell under Constant Magnetic Field

In this paper, a theoretical and experimental transient study of polycrystalline silicon solar cell under constant magnetic field is conducted. A theoretical approach is based on the columnar model of the grains and the boundaries conditions are defined in order to use Green's functions to solve the three dimensional diffusion equation. After extraction of the effective minority carrier lifetime and the reduced magnitude of the transient voltage from the experimental curve of transient voltage, the values of constraint coefficients at interfaces of the grain are computed thanks to a reverse approach method.The effects of magnetic field on the bulk component of minority carrier lifetime are then analyzed. This study showed that, the effect of the magnetic field is only significant when the values of the field are greater than or equal to 5.10^-3T.