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Issue 24, 2017
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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

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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−xClx) 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 (JSC = 20.75 mA cm−2, VOC = 1.034, FF = 0.74) and a η = 17.55% efficiency (JSC = 21.72 mA cm−2, VOC = 1.073, FF = 0.76) for (MAPbI3−xClx) and (FAPbI3)0.85(MAPbBr3)0.15, respectively, for etched TiO2 with a split structure.

Graphical abstract: 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

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Publication details

The article was received on 31 Mar 2017, accepted on 09 May 2017 and first published on 10 May 2017


Article type: Paper
DOI: 10.1039/C7TA02822A
Citation: J. Mater. Chem. A, 2017,5, 12340-12353
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    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

    S. S. Mali, C. A. Betty, P. S. Patil and C. K. Hong, J. Mater. Chem. A, 2017, 5, 12340
    DOI: 10.1039/C7TA02822A

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