AI Article Synopsis
- Lead halide perovskite materials show great potential in optoelectronics but face stability issues due to water sensitivity.
- Researchers developed stable, water-resistant cesium lead bromine perovskite nanocrystals by coating them with CsPbBr, forming a core-shell structure.
- The coating significantly improved luminescence stability in water and ethanol, making these enhanced nanocrystals suitable for long-term optoelectronic applications.
Article Abstract
Lead halide perovskite materials are thriving in optoelectronic applications due to their excellent properties, while their instability due to the fact that they are easily hydrolyzed is still a bottleneck for their potential application. In this work, water-resistant, monodispersed and stably luminescent cesium lead bromine perovskite nanocrystals coated with CsPbBr were obtained using a modified non-stoichiometric solution-phase method. CsPbBr 2D layers were coated on the surface of CsPbBr nanocrystals and formed a core-shell-like structure in the synthetic processes. The stability of the luminescence of the CsPbBr nanocrystals in water and ethanol atmosphere was greatly enhanced by the photoluminescence-inactive CsPbBr coating with a wide bandgap. The water-stable enhanced nanocrystals are suitable for long-term stable optoelectronic applications in the atmosphere.
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| http://dx.doi.org/10.1088/1361-6528/aa892e | DOI Listing |
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Article Synopsis
- Lead halide perovskite materials show great potential in optoelectronics but face stability issues due to water sensitivity.
- Researchers developed stable, water-resistant cesium lead bromine perovskite nanocrystals by coating them with CsPbBr, forming a core-shell structure.
- The coating significantly improved luminescence stability in water and ethanol, making these enhanced nanocrystals suitable for long-term optoelectronic applications.
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