eng Science and Education Publishing American Journal of Materials Science and Engineering 2333-4673 2018-04-26 6 1 7 11 10.12691/ajmse-6-1-2 AJMSE2018612 article Gerome SAMBOU sambougerome@yahoo.fr 1 Alain Kassine EHEMBA 1 Mouhamadou Mamour SOCE 1 Amadou DIAO 1 Moustapha DIENG 1 Laboratory of Semiconductors and Solar Energy, Physics Department, Faculty of Science and Technology, - University Cheikh Anta Diop - Dakar - SENEGAL In this article a frequency modulation study on a CIGS-based solar cells under the influence of incidence angle and gallium doping is made. The resolution of the minority carrier continuity equation allowed us to determine the density of minority carriers, the photocurrent density and photovoltage expressions according to modulation frequency, wavelength, incidence angle and gallium doping. Incidence angle and Gallium doping tend to decrease the performance of the solar cell by degrading its intrinsic properties. http://pubs.sciepub.com/ajmse/6/1/2/ajmse-6-1-2.pdf CIGS frequency modulation wavelength incidence angle gallium doping photocurrent photovoltage