International Journal of Engineering and Information Systems (IJEAIS)   Year: 2023 | Volume: 7 | Issue: 6 | Page No.: 60-62 Description of Functional Materials That Form the Basis of Photovoltaic and Hydrogen Energy Systems Download PDF U.K. Mayinova, J.M. Abdiev, Abstract: Perovskite solar cells (PSCs) and organic solar cells (OSCs) have expanded the boundaries of photovoltaic energy conversion. PSCs, nearing 25.7% power conversion efficiencies (PCEs), could achieve 42-49% efficiencies in tandem devices. The fusion of perovskite with silicon and CIGS in tandem cells shows high efficiency potential. OSCs, however, provide affordable, adaptable optical features, processability, and flexibility, with the finest OSCs yielding over 18% PCEs. Despite hurdles, combining perovskite and organic semiconductors in a tandem structure, has resulted in 16% PCE and 1.63 V Voc, indicating scope for improvement.