The relatively fast rearrangement of 2− n complexes followed by motion of MA cations limits the perovskite growth. Undercoordinated 2− n complexes are initially formed which create the 3D perovskite framework mediated by additional nucleophilic attacks. Our results show clear evidence of halide-driven chemistry: MAI iodine ions attack lead ions in the PbI 2 layers and cause a nucleophilic substitution of Pb–I bonds with a subsequent breaking of the PbI 2 layer. methylammonium iodide (MAI) structure, characteristic of intermediate phases observed in sequential deposition methods.To unveil the electronic and atomistic features of this process we carry out ab initio molecular dynamics simulations on a model system which consists of a stoichiometric layered lead iodide (PbI 2) Despite its relevance, there is a lack of microscopic understanding of the nucleation and crystallization processes during the formation of the perovskite phase from its precursors. Il vit et travaille à Londres.ĭepuis septembre 2018 il suit une formation de sculpteur au Royal College of Art.Controlling the crystallization mechanism of metal halide perovskites is of utmost importance to grow defect-less perovskite layers for efficient solar cells and optoelectronic devices. La réévaluation des techniques, aussi bien mécaniques que manuelles, présente dans ses oeuvres nous invite à revisiter le banal et le quotidien désormais libérés de leur déterminisme.Īlexei Alexander Izmaylov est né en Russie. Izmaylov se sert ensuite de la peinture, du dessin et du langage pour venir altérer ces éléments de manière faussement urgente et chaleureuse. Les éléments qui servent de base à ses assemblages sont souvent produits en utilisant des techniques de production mécanisées réservées à l'industrie. Très orienté vers la recherche, notamment celle de matériaux, le travail d'Alexei Alexander Izmaylov peut être qualifié de composite. Elles interrogent la relation entre leur dimensions rationnelle et symbolique avec perspicacité et humour et un certain sens de la révélation. Les sculptures d'Alexei Alexander Izmaylov se caractérisent par l'usage d'un vocabulaire de formes et de couleurs qui met en avant la dimension esthétique et la forte capacité d'évocation des objets qui les composent. He is currently enrolled on the MA Sculpture programme at the Royal College of Art.īA Visual Communication & Graphic Design 2008 The evaluation of design, mechanical and manual skills that feature in the making of Izmaylov's pieces presents us with the reinterpreted mundane, forcing to look at the everyday free from its determinism.īorn in Russia, Alexei Alexander Izmaylov lives and works in London. In doing so he oscillates between finding novel materials and ways of employing machining techniques made for industrial processes while continuously interacting with his pieces in an urgent fashion by way of assemblage, painting and inlay. Heavily rooted in research, Alexei Alexander Izmaylov makes designs which subsequently yield components for assembly of his artworks. What follows is cognitive dissonance, insight and a sense of disclosure: gradually revealing that the work possesses a critical and conceptual magnitude which questions both rational and symbolic dimensions. Alexei Alexander Izmaylov's sculpture based practice is fundamentally comprised of intuitive use of light, shape and colour, and his pieces are initially recognised for their aesthetic value and ability to forge a visceral connection.
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