Photo Stabilization of p‐i‐n Perovskite Solar Cells with Bathocuproine: MXene. Issue 37 (11th August 2022)

• Record Type: Journal Article
• Authors: Yakusheva, Anastasia; Saranin, Danila; Muratov, Dmitry; Gostishchev, Pavel; Pazniak, Hanna; Di Vito, Alessia; Le, Thai Son; Luchnikov, Lev; Vasiliev, Anton; Podgorny, Dmitry; Kuznetsov, Denis; Didenko, Sergey; Di Carlo, Aldo
• Is Part Of: Small. Volume 18:Issue 37(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-08-11
• Subjects: inverted 2D materials -- MXenes -- perovskite solar cells -- photo stability -- thermal stability -- Ti 3C 2T x; Nanotechnology -- Periodicals; Nanoparticles -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1002/smll.202201730
• Languages: English
• ISSNs: 1613-6810

Abstract

Abstract: Interface engineering is one of the promising strategies for the long‐term stabilization of perovskite solar cells (PSCs), preventing chemical decomposition induced by external agents and promoting fast charge transfer. Recently, MXenes–2D structured transition metal carbides and nitrides with various functionalization (O, ‐F, ‐OH) have demonstrated high potential for mastering the work function in halide perovskite absorbers and have significantly improved the n‐type charge collection in solar cells. This work demonstrates that MXenes allow for efficient stabilization of PSCs besides improving their performances. A mixed composite bathocuproine:MXene, that is, (BCP:MXene) interlayer, is introduced at the interface between an electron‐transport layer (ETL) and a metal cathode in the p‐i‐n device structure. The investigation demonstrates that the use of BCP:MXene interlayer slightly increases the power conversation efficiency (PCE) for PSCs (from 16.5 for reference to 17.5%) but dramatically improves the out of Glove‐Box stability. Under ISOS‐L‐2 light soaking stress at 63 ± 1.5 °C, the T80 (time needed to reduce efficiency down to 80% of the initial one) period increases from 460 to > 2300 hours (h). Abstract : The method of interface engineering improves photostability of the p‐i‐n perovskite solar cells (PSCs) for > 2400 hours (h). Using small molecule bathocuproine plays a beneficial role in the solution fabrication of the composite interlayers with dispersions of Ti3 C2 Tx MXenes. The first report is about a significant improvement in the stability of PCSswith MXenes at the interface with the metal electrode.