Jay B. Patel, King’s College, London, United Kingdom
Hybrid perovskites semiconductors provide an opportunity to create highly efficient low-cost, lightweight, photovoltaics that have a high power-to-weight ratio. Physical vapor deposition is the technique that enables the creation of a multilayer heterostructure that contains hybrid perovskites semiconductors, small-molecule organic and metal oxide semiconductors. However, to develop such an intricate architecture that can reach close to the theoretical limit, the metal-halide perovskite semiconductors need to have minimal defects and phase stability. We have shown that by manipulating, the substrate material [(Patel et al., 2017)] the temperature [(Lohmann et al., 2020)] and the addition of additives [(Lohmann et al., 2022)] can aid in growing highly crystalline, low defect density perovskite thin films.
In this presentation, we will show our progress in developing high quality thermally evaporated perovskite semiconductors and our advancements of the evaporation technique to develop triple junction perovskite photovoltaics.