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Structural phase transition and bandgap control through mechanical deformation in layered semiconductors 1T–ZrX2 (X = S, Se)

Martino, Edoardo ; Santos-Cottin, David ; Le Mardelé, Florian ; Semeniuk, Konstantin ; Pizzochero, Michele ; Čerņevičs, Kristia̅ns ; Baptiste, Benoît ; Delbes, Ludovic ; Klotz, Stefan ; Capitani, Francesco ; Berger, Helmuth ; Yazyev, Oleg V. ; Akrap, Ana

In: ACS Materials Letters, 2020, vol. 2, no. 9, p. 1115–1120

Applying elastic deformation can tune a material’s physical properties locally and reversibly. Spatially modulated lattice deformation can create a bandgap gradient, favoring photogenerated charge separation and collection in optoelectronic devices. These advantages are hindered by the maximum elastic strain that a material can withstand before breaking. Nanomaterials derived by exfoliating...