The silicon solar cell with 12cm x 12cm area is applicable 180µm. To form this p-n junction, 9x1018 phosphorus atomS and 5x1016 boron atoms are doped. The minority carrier (electron) life in the p- junction is tn = 140µs and its mobility ut = 0.07m²-'s-1, moreover, the life of minority carrier (hall) in the n-junction was measured as tp = 80µus and its mobility as µp= 0.023 m²V¯is¬1 a-) Find the p- and n- caliber minority carrier densities b-) Find the diffusion length of minority carriers and compare with the material. c-) Find open circuit voltage (VOC), short circuit current (ISC) and fill ratio (FF).