title: Large-area semi-transparent light-sensitive nanocrystal skins.
abstract: We report a large-area, semi-transparent, light-sensitive nanocrystal skin (LS-NS) platform consisting of single monolayer colloidal nanocrystals. LS-NS devices, which were fabricated over areas up to 48 cm(2) using spray-coating and several cm-squares using dip-coating, are operated on the principle of photogenerated potential buildup, unlike the conventional charge collection. Implementing proof-of-concept devices using CdTe nanocrystals with ligand removal, we observed a substantial sensitivity enhancement factor of ~73%, accompanied with a 3-fold faster response time (<100 ms). With fully sealed nanocrystal monolayers, LS-NS is found to be highly stable under ambient conditions, promising for low-cost large-area UV/visible sensing in windows and facades of smart buildings.
authors.affiliation: UNAM–Institute of Materials Science and Nanotechnology, Department of Electrical and Electronics Engineering, Department of Physics, Bilkent University, Ankara, 06800, Turkey.
authors.forename: Shahab
authors.initials: S
authors.lastname: Akhavan
authors.forename: Burak
authors.initials: B
authors.lastname: Guzelturk
authors.forename: Vijay Kumar
authors.initials: VK
authors.lastname: Sharma
authors.forename: Hilmi Volkan
authors.initials: HV
authors.lastname: Demir