Power Efficiency in Halide Perovskite Solar Cells
Major
Biochemistry
Second Major
Biology
Submission Type
Poster
Area of Study or Work
Physics
Faculty Advisor
Keller Andrews
Location
CNS Atrium
Start Date
4-12-2025 11:15 AM
End Date
4-12-2025 12:15 PM
Abstract
We consider the potential of halide perovskite solar cells as an alternative to silicon solar cells, due to their low-cost fabrication, environmental sustainability, and potential better performance. Halide perovskite compounds are characterized by an ABX₃ composition; the compound MAPBr₃ (methylammonium lead bromide) was used in this experiment. The addition of methylammonium is used as a way to enhance the stability of the perovskite by modifying the crystal structure. A small methylammonium molecule can fit into the PBr3 crystal lattice structure and optimize the bandgap to enhance electron transport. The solar cell we developed was structured in layers, with the first layer being the substrate which was indium tin oxide coated glass. The second layer, titanium di-isoproproxide bis(acetylacetonate), serves as our electron transport layer, the third layer, our perovskite compound, MAPBr₃, and the fourth layer, titanium dioxide, serves as the hole transport layer. The final layer of silver paint served as a conducting layer. Each layer, with the exception of silver paint, was spin-coated onto the glass substrate. When a solar cell is exposed to light, it produces current, which generates electrical power. The absorption of light in a solar cell causes electrons to become excited, allowing them to leave the solar cell and enter an electrical circuit. Measurements of the voltage and current output from our perovskite solar cells were taken under various illumination conditions. Our goal is to measure the efficiency of the solar cell, defined as the ratio of output electrical power to input optical power, with additional plans to determine how the power output varies as different ratios of methyl-ammonium inclusions are used.
Power Efficiency in Halide Perovskite Solar Cells
CNS Atrium
We consider the potential of halide perovskite solar cells as an alternative to silicon solar cells, due to their low-cost fabrication, environmental sustainability, and potential better performance. Halide perovskite compounds are characterized by an ABX₃ composition; the compound MAPBr₃ (methylammonium lead bromide) was used in this experiment. The addition of methylammonium is used as a way to enhance the stability of the perovskite by modifying the crystal structure. A small methylammonium molecule can fit into the PBr3 crystal lattice structure and optimize the bandgap to enhance electron transport. The solar cell we developed was structured in layers, with the first layer being the substrate which was indium tin oxide coated glass. The second layer, titanium di-isoproproxide bis(acetylacetonate), serves as our electron transport layer, the third layer, our perovskite compound, MAPBr₃, and the fourth layer, titanium dioxide, serves as the hole transport layer. The final layer of silver paint served as a conducting layer. Each layer, with the exception of silver paint, was spin-coated onto the glass substrate. When a solar cell is exposed to light, it produces current, which generates electrical power. The absorption of light in a solar cell causes electrons to become excited, allowing them to leave the solar cell and enter an electrical circuit. Measurements of the voltage and current output from our perovskite solar cells were taken under various illumination conditions. Our goal is to measure the efficiency of the solar cell, defined as the ratio of output electrical power to input optical power, with additional plans to determine how the power output varies as different ratios of methyl-ammonium inclusions are used.