Self-assembled Zn phthalocyanine as a robust p-type selective contact in perovskite solar cells. Issue 10 (28th August 2020)

• Record Type: Journal Article
• Authors: Aktas, Ece; Jiménez-López, Jesús; Azizi, Kobra; Torres, Tomas; Palomares, Emilio
• Is Part Of: Nanoscale horizons. Volume 5:Issue 10(2020)
• Page Start: 1415
• Page End: 1419
• Publication Date: 2020-08-28
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/d0nh00443j
• Languages: English
• ISSNs: 2055-6756

Abstract

Abstract : The use of self-assembled monolayers as selective charge extracting layers in perovskite solar cells is an efficient approach to replace the traditionally used contacts, as they can easily modify the interface to improve the solar cell performance. Abstract : The use of self-assembled monolayers (SAMs) as selective charge extracting layers in perovskite solar cells is a great approach to replace the commonly used charge selective contacts, as they can easily modify the interface to enhance the final solar cell performance. Here, we report a novel synthetic approach of the commonly known zinc phtalocyanine (ZnPc) molecule TT1, widely employed in dye-sensitized solar cells and previously used in perovskite solar cells. TT1 is used as a p-type selective contact, and it demonstrates its ability to form SAM on top of the indium tin oxide (ITO) transparent electrode, obtaining higher efficiencies compared to Pedot:PSS based perovskite solar cells. The differences observed, with an enhanced open-circuit voltage and overall efficiency in TT1 devices are correlated with differences in energetics rather than recombination kinetics.