Lead Halide perovskite solar cells are the next generation of solar cells, likely to over take silicon and organic solar cells in applications within the next 5-10 years. Lead Halide perovskite materials also known as MALI have already achieved efficiencies up to over 20%, which is a factor four greater than organic semiconductor solar cells. MALI is also cheaper compared to the traditional inorganic semiconductors such as silicon, so are a real alternative. The main issues with MALI are its' lifetime, reliability and reproducibility. Due to the potential applications of these materials, less work has focused on the fundamental science behind them. Thus this study looks to use muons to investigate the dynamics within MALI, aiming to try and understand the material, so to help solve some of the issues holding back the its' commercialisation into solar cells.