CZTS CZTS Method of manufacturimg of CZTS-based thin film solar cell and CZTS-based thin film solar cell thereby

摘要

The present invention relates to a method of manufacturing a CZTS thin film solar cell and a CZTS thin film solar cell manufactured thereby, and more particularly, to a method of manufacturing a CZTS thin film solar cell by forming a rear electrode on a substrate (step 1); Irradiating an energy beam onto the rear electrode of step 1 to recrystallize the rear electrode (step 2); And forming a CZTS (Cu ₂ ZnSn (S, Se) ₄ ) light absorbing layer on the rear electrode of step 2 (step 3). According to the method of manufacturing the CZTS thin film solar cell according to the present invention, the rear surface electrode is recrystallized to suppress the interfacial compound that may occur between the rear electrode and the CZTS thin film, thereby lowering the rear electrode barrier to improve the hole flow, The series resistance of the device is improved to improve the fill factor and the efficiency of the device as a whole. In addition, since the rear electrode is recrystallized at a low temperature through the energy beam, there is an advantage that a substrate capable of improving the characteristics of the light absorption layer such as soda lime glass can be used.