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Type: 
Journal
Description: 
Hybrid halide perovskites represent one of the most promising solutions toward the fabrication of all solid nanostructured solar cells, with improved efficiency and long-term stability. This article aims at investigating the structural properties of iodide/chloride mixed-halide perovskites and correlating them with their photovoltaic performances. We found out that, independent of the components ratio in the precursor solution, Cl incorporation in an iodide-based structure, is possible only at relatively low concentration levels (below 3–4%). However, even if the material band gap remains substantially unchanged, the Cl doping dramatically improves the charge transport within the perovskite layer, explaining the outstanding performances of meso-superstructured solar cells based on this material.
Publisher: 
American Chemical Society
Publication date: 
11 Nov 2013
Authors: 

Silvia Colella, Edoardo Mosconi, Paolo Fedeli, Andrea Listorti, Francesco Gazza, Fabio Orlandi, Patrizia Ferro, Tullo Besagni, Aurora Rizzo, Gianluca Calestani, Giuseppe Gigli, Filippo De Angelis, Roberto Mosca

Biblio References: 
Volume: 25 Issue: 22 Pages: 4613-4618
Origin: 
Chemistry of Materials