Proceedings of Online Meetup - Beyond Lead Halide Perovskites: Syntheses and Applications of Metal Halide Semiconductors (MABP)
Publication date: 23rd April 2020
In the last decade semiconducting organic-inorganic lead halide perovskite, such as methylammonium lead triiodide MAPbI3 and methylammonium lead tribromide MAPbBr3, have become one of the most potent game-changers in the photovoltaic community. Apart from use in efficient solar cells, many other applications such as fast photon detection,[1] gas sensing,[2] relatively high thermoelectric figure of merit,[3] optically-switched ferromagnetic behavior[4] and light-emitting optoelectronic devices have also been demonstrated. However, typical state-of-the-art perovskite optoelectronic devices, posses a multilayer device architecture. Fabrication of such devices is more complex, requiring utilization of orthogonal solvents, which usually results in air-sensitive transport layers. In this study, we report the construction and characterization of optoelectronic properties of light-emitting devices designed around single crystals of MAPbBr3, which were grown directly on vertically aligned carbon nanotubes (VACNTs).[5] The electroluminescence (EL) spectra, light intensities and current-voltage (I-V) characteristics will be studied from room temperature down to cryogenic temperatures (20 K) and disused in the framework of light-emitting electrochemical cells (LECs).
This work was supported by the Swiss National Science Foundation (No. 513733) and the ERC advanced grant “PICOPROP” (Grant No. 670918).
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