The group report on “Tetrazine molecules as efficient electronic diversion channel in 2D organic-inorganic perovskites”. This work has been done in collaboration with FOTON, PPSM, and ILV labs. You can find the paper here
Abstract: We present the synthesis of two novel two-dimensional (2D) hybrid organic-inorganic halide perovskites incorporating for the first time 100% of a photoactive tetrazine derivative as the organic component. With this dye acting as spacer, the perovskite excitonic light emission is strongly suppressed, a fact that comes with surprise, considering the outstanding emission properties both of lead-halide perovskite frames. Photophysical studies along with hybrid DFT simulations demonstrate partial energy transfer from the inorganic frame to the organic dye and allow to discuss several diversion channels for the relaxation of carriers generated in the perovskite. Our work proves the feasibility of inserting photoactive small rings in a 2D perovskite structure, meanwhile providing robust frame to rationalize the electronic interactions between the semiconducting inorganic layer and organic chromophores, with the prospects of optimizing the organic moiety according to the envisaged application.
