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Nanostructured rutile TiO2 electron transporting layer via etching process for efficient perovskite solar cells: Impact of TiO2 structural and crystalline properties

Abstract

In the present investigation, hollow and split nanostructures of rutile TiO2 have been synthesized using simple hydrothermal and chemical etching process. Two typical structures such as TiO2 nanorods and nanoflowers have been used as an electron transporting layer (ETL) for perovskite solar cells (PSCs). The optimized nanostructured ETLs have been 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=15.87 % efficiency (JSC=20.75mAcm-2, VOC=1.034, FF=0.74) and =17.55 % efficiency (JSC=21.72 mAcm-2, VOC=1.073, FF=0.76) respectively for MAPbI3-xClx) and (FAPbI3)0.85 (MAPbBr3)0.15 for etched TiO2 with split structure.

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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, Accepted Manuscript
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    Nanostructured rutile TiO2 electron transporting layer via etching process for efficient perovskite solar cells: Impact of TiO2 structural and crystalline properties

    S. S. Mali, B. A. Chirayath, P. Patil and C. K. Hong, J. Mater. Chem. A, 2017, Accepted Manuscript , DOI: 10.1039/C7TA02822A

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