Study of organic solar cells based on wide band gap semiconductor/perovskite hetero-junction

Abstract

This thesis focuses on enhancing the efficiency of solar cells by utilizing perovskite materials, specifically two different perovskite Cesium silver bismuth iodide (Cs2BiAgI6) and methyl ammonium lead triiodide (MAPbI3). Through meticulous investigation and analysis, the aim is to advance solar cell technology. The performance of solar cells based on different structures of Cs2BiAgI6 and MAPbI3 is simulated using Silvaco-ATLAS software to optimize their efficiency. Initially, the study delves into Cs2BiAgI6 solar cells, adjusting various parameters such as the hole transport layer (NiO), electron transport layer (ZnO), and front contact (ITO with SiO2). Significant enhancement in power conversion efficiency (PCE) up to 32:86% is achieved, showcasing the effectiveness of the optimizations. Additionally, a comparative analysis between Cs2BiAgI6 and CH3NH3PbI3 solar cells reveals Cs2BiAgI6’s superior performance with a PCE of 23:02%. This research aims to contribute valuable insights into the properties, efficiency, and stability of these materials,advancing their potential applications in solar energy