Mixed Donor and Acceptor Organic Molecules in Hybrid Lead-Halide Films

Low dimensional hybrid organic-inorganic lead-halide structures are gaining interest due to their structural flexibility and tunability compared their parent 3-D perovskite structure. By combining the tunability of organic chromophores and the desirable optical properties of perovskites, we aim to develop a new portfolio of hybrid organic-inorganic lead-halide materials. Deriving from the well-known 2-D hybrid perovskite structure PEA₂PbI₄, we introduced net acceptor and donor molecules into the organic bilayer to study the effects of charge transfer within the layered perovskite. We will present work on deposition of these hybrid perovskites using vapor deposition method and spin coating method, which are subsequently characterized by X-ray diffraction, fluorescence microscopy, and optical measurements such as UV-vis, photoluminescence and lifetime.