Speaker : Professeure Safae AAZOU (Université Mohammed V de Rabat Maroc)

Abstract: Tandem solar cells can exceed the efficiency limits of single-junction devices. In this study, we investigate the use of TiO₂ buffer layer as an alternative to CdS in kesterite/c-Si tandem solar cells through combined optical and electrical simulations. The results show that TiO₂ reduces parasitic absorption and interface recombination, leading to improved optoelectronic performance. An optimized CZTGeS/c-Si tandem structure achieved an efficiency close to 20%. These findings highlight the potential of TiO₂ buffer layers for developing efficient and environmentally friendly kesterite/silicon tandem solar cells.

Pour tout contact : Dris Ihiawakrim (0388107015 – dris.ihiawakrim@ipcms.unistra.fr)