UC Merced

Organo-Metalic Halide Perovskite materials have been under investigation in recent years due to their easy fabrication, high defect tolerances, and high absorption coefficients across the visible spectrum making them ideal for integration into Photovoltaic devices. Perovskite photovoltaics have recently exceeded 25\% in power conversion efficiencies swiftly approaching the best-reported silicon and III-V single-junction cells to date. In addition, perovskite materials are easily synthesized through low-temperature solution-based methods, in contrast to, and III-V materials that require high temperatures and low defect densities to produce. Other applications that have demonstrated promising results include photodetection lasing and light emission. The emergence of low dimensional variants of OMHPs has further increased the versatility of this family of compounds. Two-dimensional perovskites offer increased exciton binding energies with increased moisture stability. In addition, zero-dimensional perovskite quantum dots (PQDs) allow size-tunability of optoelectronic properties and high photoluminescent quantum yields ~ 80 % which make them strong candidates for room temperature high fidelity single photon emission sources. This dissertation will focus on the author's work with space qualifying three-dimensional perovskite thin films, understanding energy transfer in Manganese doped perovskites and the modification of Perovskite Quantum Dot surfaces to increase PQD ensemble conductivity. In addition, it will highlight the importance of the non-destructive optical properties used, with a specific emphasis on the value of temperature-dependent spectroscopy.