A solution-based ALD route towards (CH3NH3)(PbI3) perovskite via lead sulfide films. Issue 43 (23rd October 2019)

• Record Type: Journal Article
• Authors: Koch, Vanessa M.; Barr, Maïssa K. S.; Büttner, Pascal; Mínguez-Bacho, Ignacio; Döhler, Dirk; Winzer, Bettina; Reinhardt, Elisabeth; Segets, Doris; Bachmann, Julien
• Is Part Of: Journal of materials chemistry. Volume 7:Issue 43(2019)
• Page Start: 25112
• Page End: 25119
• Publication Date: 2019-10-23
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c9ta09715e
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : Lead sulfide is deposited from the salts in 'solution ALD' mode and converted directly to the hybrid perovskite CH3 NH3 PbI3 . Abstract : We present a procedure to grow thin films of lead sulfide (PbS) with 'solution Atomic Layer Deposition' (sALD), a technique which transfers the principles of ALD from the gas phase (gALD) to liquid processing. PbS thin films are successfully deposited on planar and porous substrates with a procedure that exhibits the unique ALD characteristics of self-limiting surface chemistry and linear growth at room temperature. The polycrystalline p-type PbS films are stoichiometric and pure. They are converted to the hybrid perovskite methylammonium iodoplumbate (methylammonium lead iodide, MAPI, CH3 NH3 PbI3 ) by annealing to 150 °C in the presence of vapors from methylammonium iodide (MAI).