Interfacial Morphology Addresses Performance of Perovskite Solar Cells Based on Composite Hole Transporting Materials of Functionalized Reduced Graphene Oxide and P3HT

• DOI: 10.1002/solr.201800013
• Publication Date: 2018-03-15T10:33:15Z
• Authors: Teresa Gatti; Francesco Lamberti; Peter Topolovsek; Mustapha Abdu‐Aguye; Roberto Sorrentino; Luca Perino; Marco Salerno; Leonardo Girardi; Carla Marega; Gian Andrea Rizzi; Maria Antonietta Loi; Annamaria Petrozza; Enzo Menna
• Keywords: Characterization; Surface Modification

The development of novel hole transporting materials (HTMs) for perovskite solar cells (PSCs) that can enhance device's reproducibility is a largely pursued goal, even to the detriment very high efficiency, since it paves way an effective industrialization this technology. In work, we study covalent functionalization reduced graphene oxide (RGO) flakes with different organic functional groups aim increasing stability and homogeneity their dispersion within poly(3‐hexylthiophene) (P3HT) HTM. selected are indeed those recalling two characteristic moieties present in P3HT, i.e., thienyl alkyl residues. After preparation characterization number functionalized RGO@P3HT blends, test containing highest percentage dispersed RGO as HTMs PSCs compare performance pristine P3HT standard Spiro‐OMeTAD Results reveal big influence morphology adopted by single contained composite HTM driving final device allow distinguish one these blends promising material fabrication highly reproducible PSCs.