Publications by authors named "Daria I Markina"

Optical data storage, information encryption, and security labeling technologies require materials that exhibit local, pronounced, and diverse modifications of their structure-dependent optical properties under external excitation. Herein, we propose and develop a novel platform relying on lead halide Ruddlesden-Popper phases that undergo a light-induced transition toward bulk perovskite and employ this phenomenon for the direct optical writing of multicolor patterns. This transition causes the weakening of quantum confinement and hence a reduction in the band gap.

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Detection of hazardous volatile organic and inorganic species is a crucial task for addressing human safety in the chemical industry. Among these species, there are hydrogen halides (HX, X = Cl, Br, I) vastly exploited in numerous technological processes. Therefore, the development of a cost-effective, highly sensitive detector selective to any HX gas is of particular interest.

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Article Synopsis
  • Inorganic halides perovskite CsPbBr nanoparticles exhibit high light-conversion efficiency and tunability across the visible spectrum, making them valuable for optoelectronic applications.
  • A new method involving the recrystallization of these nanoparticles within electrospun fluoropolymer fibers has been developed, using affordable materials and equipment.
  • The resulting nonwoven mats demonstrated effective down-conversion of UV light and up-conversion of IR radiation, along with strong mechanical stability, highlighting their potential for flexible, commercially viable technologies.
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Inorganic cesium lead halide perovskite nanowires, generating laser emission in the broad spectral range at room temperature and low threshold, have become powerful tools for the cutting-edge applications in the optoelectronics and nanophotonics. However, to achieve high-quality nanowires with the outstanding optical properties, it was necessary to employ long-lasting and costly methods of their synthesis, as well as postsynthetic separation and transfer procedures that are not convenient for large-scale production. Here we report a novel approach to fabricate high-quality CsPbBr nanolasers obtained by rapid precipitation from dimethyl sulfoxide solution sprayed onto hydrophobic substrates at ambient conditions.

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