Investigation of Electron Transport Material-Free Perovskite/CIGS Tandem Solar Cell

Tandem solar cells have a superb potential to push the power conversion efficiency (PCE) of photovoltaic technologies. They can be also more stable and economical. In this simulation work, an efficient perovskite cell (PSC) with Spiro-OMeTAD as hole transport material (HTM) no electron (ETM) replace traditional PSC structure is presented. This then used top sub together copper indium gallium sulfide (CIGS) bottom build tandem cell. The multi-junction behavior improved by engineering technological physical parameters HTM. results show that n-p heterojunction ETM free could good candidate for n-i-p structure. Because such investigations, performance proposed ETM-free PSC/CIGS designed reach PCE high 35.36%.