Proceedings of nanoGe Fall Meeting19 (NFM19)
DOI: https://doi.org/10.29363/nanoge.nfm.2019.176
Publication date: 18th July 2019
The great success of halide perovskites boosted also the interest on the nanoparticles (NPs) of these materials. Perovskite NP are also generating a huge interest as relative easy preparation methods yield a simple core structure, without need for passivating shells, reach photoluminescence quantum yield (PLQY) higher than 90%.This remarkable PLQY points to low non-radiative recombination and consequently shows excellent rationale for the development of optoelectronic devices. In this talk first the phase segregation into iodine and bromine rich regions under illumination of mixed halide perovskite depending on the crystal size. Phase segregation is not observed for colloidal perovskite nanoparticles with diameter of few tenths nm. However, when these particles are annealed producing grains of bigger size the phase segregation is observed for sizes bigger than 50 nm. In addition, the possibility of use perovskite nanoparticles for photocatalytic applications is also studied for different kinds of inorganic perovskite nanoparticles.
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