Carbon nanotubes as an efficient hole collector for high voltage methylammonium lead bromide perovskite solar cells. Issue 12 (8th December 2015)

• Record Type: Journal Article
• Authors: Li, Zhen; Boix, Pablo P.; Xing, Guichuan; Fu, Kunwu; Kulkarni, Sneha A.; Batabyal, Sudip K.; Xu, Wenjing; Cao, Anyuan; Sum, Tze Chien; Mathews, Nripan; Wong, Lydia Helena
• Is Part Of: Nanoscale. Volume 8:Issue 12(2016)
• Page Start: 6352
• Page End: 6360
• Publication Date: 2015-12-08
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/c5nr06177f
• Languages: English
• ISSNs: 2040-3364

Abstract

Abstract : A high open circuit voltage close to 1.4 V is achieved when carbon nanotubes are used as a hole conductor in methyl ammonium lead bromide perovskite solar cells. Abstract : A high open circuit voltage ( V OC ) close to 1.4 V under AM 1.5, 100 mW cm −2 conditions is achieved when carbon nanotubes (CNTs) are used as a hole conductor in methyl ammonium lead bromide (MAPbBr3 ) perovskite solar cells. Time-resolved photoluminescence and impedance spectroscopy investigations suggest that the observed high V OC is a result of the better charge extraction and lower recombination of the CNT hole conductor. Tandem solar cells with all perovskite absorbers are demonstrated with a MAPbBr3 /CNT top cell and a MAPbI3 bottom cell, achieving a V OC of 2.24 V in series connection. The semitransparent and high voltage MAPbBr3 /CNT solar cells show great potential for applications in solar cell windows, tandem solar cells and solar driven water splitting.