Wpływ domieszkowania halogenkami metali alkalicznych na właściwości warstw perowskitowych w ogniwach słonecznych

Perovskite cells are a new generation of solar cells that have gained significant attention in the field of photovoltaics due to their unique properties and potential benefits. Perovskites are a class of materials that have a characteristic crystal structure known as the perovskite structure. The typical chemical formula of perovskite is ABX3, where 'A' and 'B' are cations that differ in size, and 'X' is an anion, most often halogen. Doping with alkali metals in perovskite materials has shown a significant improvement in the efficiency of the solar cell, which is confirmed by numerous scientific studies. The addition of rubidium bromide and other alkali metals, such as lithium, sodium and potassium, affects the microstructure, electronic and optical properties of perovskites, which is crucial for the efficiency and stability of solar cells. The paper presents research results on doping with alkali metals for inorganic perovskite cells based on CsPbBr3. The process of doping with alkali metals was carried out in various stages of creating a Perovskite cell. The work presents the influence of the dopant on the structure of the perovskite and the obtained cell, as well as its optical and electrical properties. The conducted research indicates a positive effect of the addition of rubidium bromide, both in the phase of creating the lead bromide layer and during the application of cesium bromide. The most promising is the admixture of 9% rubidium bromide in the cesium bromide layer. In this way, the applied dopant is located in the perovskite structure, changing its optical and electrical properties.