Synthesis of a nanostructured rutile TiO2 electron transporting layer via an etching process for efficient perovskite solar cells: impact of the structural and crystalline properties of TiO2. Issue 24 (31st May 2017)

• Record Type: Journal Article
• Authors: Mali, Sawanta S.; Betty, C. A.; Patil, P. S.; Hong, Chang Kook
• Is Part Of: Journal of materials chemistry. Volume 5:Issue 24(2017)
• Page Start: 12340
• Page End: 12353
• Publication Date: 2017-05-31
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c7ta02822a
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : In the present investigation, hollow and split nanostructures of rutile TiO2 have been synthesized using simple hydrothermal and chemical etching processes and applied for perovskite solar cells. Abstract : In the present investigation, hollow and split nanostructures of rutile TiO2 have been synthesized using simple hydrothermal and chemical etching processes. Two typical structures such as TiO2 nanorods and nanoflowers were used as electron transporting layers (ETLs) for perovskite solar cells (PSCs). The optimized nanostructured ETLs were then used for mixed halide PSCs such as methyl ammonium iodide (MAPbI3 ), methyl ammonium iodide/chloride mixed-halide perovskite (MAPbI3− x Cl x ) and (FAPbI3 )0.85 (MAPbBr3 )0.15 (herein FAPbI3 = formamidinium lead halide and MAPbBr3 = methylammonium lead bromide). The optimized results show a η = 15.87% efficiency ( J SC = 20.75 mA cm −2, V OC = 1.034, FF = 0.74) and a η = 17.55% efficiency ( J SC = 21.72 mA cm −2, V OC = 1.073, FF = 0.76) for (MAPbI3− x Cl x ) and (FAPbI3 )0.85 (MAPbBr3 )0.15, respectively, for etched TiO2 with a split structure.