Enhanced Photo-Luminescence Stability and Efficiency of Dehydrate Perovskite Quantum Dots via Water-Selective Capture
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Organometal halide perovskite quantum dots (PQDs) are a semiconductor nanoparticle with a size of 2 - 10 nm. Adjusting the quantum confinement effect or halide ratio to variously exhibit the emission wavelength of the PQDs. These materials can be an important advantage in display applications. QDs are divided into inorganic and organic materials, and inorganic QDs have a FWHM and need a high cost. Therefore, it is necessary to explore the material used as an alternative to the inorganic QDs, and for example, it is possible to use hybrid PQDs. Hybrid perovskite materials have unstable and high quantum efficiency, but it can complement through additional processes. In the process of synthesizing PQDs in room temperature and ambient condition, molecular sieves were used to remove H2O molecules in the solvent, and analyzed the effect of molecular sieves. Relatively dehydrated QDs have been uniformly synthesized, and efficiency and stability have been improved.