Victoria Lapointe's latest work on the formation of superlattices from alumina shelled perovskite nanocrystals has just been published in the Royal Society of Chemistry's flagship journal Chemical Science. In this work, we found that precise alumina shelling through colloidal atomic layer deposition (c-ALD) results in self-assembled supercrystals that are resistant to (structural) aging over the course of 25 days. We gained some general insights on the effect of this shelling on the self-assembly of these nanocrystals. This work is the culmination of a Natural Sciences and Engineering Research Council of Canada (NSERC) Michael Smith Foreign Study Supplement that allowed Victoria to travel to EPFL (École polytechnique fédérale de Lausanne) to work in Raffaella Buonsanti's lab to learn about c-ALD. Congrats to Victoria and Philippe Green (an excellent postdoctoral researcher with Raffaella)! Many thanks to Raffaella for graciously hosting Victoria and for all of her valuable insights as this project took shape.
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Superlattice paper published in RSC Chemical Science
February 23, 2024
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Scanning electron micrograph of a perovskite superlattice with (inset) associated light emission of the corresponding film.