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In this work, we report on ∼4% power conversion efficiency (PCE) depleted bulk heterojunction (DBH) solar cells based on a high-quality electrode with a three-dimensional nanoscale architecture purposely designed so as to maximize light absorption and charge collection. The newly conceived architecture comprises a mesoporous electron-collecting film made of networked anisotropic metal-oxide nanostructures, which accommodates visible-to-infrared light harvesting quantum dots within the recessed regions of its volume. The three-dimensional electrodes were self-assembled by spin-coating a solution of colloidal branched anatase TiO2 NCs (BNC), followed by photocatalytic removal of the native organic capping from their surface by a mild UV-light treatment and filling with small PbS NCs via infiltration. The PCE ∼ 4% of our TiO2 BNC/PbS QD DBH solar cell features an enhancement of 84% over the …
American Chemical Society
Publication date: 
9 Apr 2014

Anna Loiudice, Giulia Grancini, Antonietta Taurino, Michela Corricelli, Maria R Belviso, Marinella Striccoli, Angela Agostiano, M Lucia Curri, Annamaria Petrozza, P Davide Cozzoli, Aurora Rizzo, Giuseppe Gigli

Biblio References: 
Volume: 6 Issue: 7 Pages: 5026-5033
ACS applied materials & interfaces