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Item type:Publication, Introduction to Perovskites: A Historical Perspective(Springer, 2020-01-01)The chapter focuses on how the name perovskite evolved from being used for a particular, and geologically not very relevant, mineral discovered in the eighteen century to symbolize a vast number of essential materials in our society that are also intensively investigated nowadays due to their promising applications. The transition took decades to occur and involved several scientists from different but related disciplines such as geology, mineralogy, chemistry, and physics. Here, a short and condensed account of the history of research on perovskites since the discovery of the mineral is given. The account would include how and when the perovskite family grew and incorporated related structures such as the hexagonal perovskites, double (or elpasolite ) perovskites, Aurivillius and Ruddlesden-Popper layered phases, and oxygen-deficient compounds, among others. Special attention is given to the relevant scientists that inspired hundreds of others. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Rapid Scalable Processing of Tin Oxide Transport Layers for Perovskite Solar Cells(American Chemical Society, 2020-06-22)Abstract The development of scalable deposition methods for perovskite solar cell materials is critical to enable the commercialization of this nascent technology. Herein, we investigate the use and processing of nanoparticle SnO2 films as electron transport layers in perovskite solar cells and develop deposition methods for ultrasonic spray coating and slot-die coating, leading to photovoltaic device efficiencies over 19%. The effects of postprocessing treatments (thermal annealing, UV ozone, and O2 plasma) are then probed using structural and spectroscopic techniques to characterize the nature of the np-SnO2/perovskite interface. We show that a brief ?hot air flow? method can be used to replace extended thermal annealing, confirming that this approach is compatible with high-throughput processing. Our results highlight the importance of interface management to minimize nonradiative losses and provide a deeper understanding of the processing requirements for large-area deposition of nanoparticle metal oxides.