Stability Enhanced 3D, 2D, and Mixed Dimensional Hybrid Organometal Halide Perovskites for Application in Solar Cells SHANMUGAMVIGNESH 2018 Sunlight is often considered the most abundant and truly renewable energy resource. Among the technologies available to harness solar energy, photovoltaic conversion of sunlight to electricity – the so called solar cell - is the most popular. Silicon solar cells are nearly omnipresent. However, processing and cost issues drive research into solar cells using newer materials. A promising newcomer is the perovskite solar cells that have comparable efficiencies and lower production costs. The main obstacle to commercialization of perovskite solar cells, however, is their poor stability. The present work focuses on the stability of perovskites used in solar cells.