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Perovskite Beyond Photovoltaics: Field Emission from Morphology Tailored Nanostructured Methylammonium Lead Triiodide

Abstract

Methylammonium lead triiodide (CH3NH3PbI3) nanorods and nanocrystals were prepared by a facile room temperature wet chemical method by simple variation of synthesis parameters. Proper phase formation was confirmed by x-ray diffraction studies whereas the morphological features were investigated using field emission scanning electron microscopy and transmission electron microscopy. The bonding information and the presence of organic functional groups within the synthesized nanostructures were confirmed using Fourier transformed infrared spectroscopy. The work function of the material was calculated using first principles studies. In an attempt to explore the potential of the perovskite beyond photovoltaic applications the field emission performance of the nanostructured CH3NH3PbI3 was investigated. The turn-on field (electric field corresponding to 10 µA/cm2 current density) was obtained to be 4.2 V/µm with current density reaching up to 96 µA/cm2 for inter-electrode spacing of 200 µm for the nanorod samples. The emission current stability was checked to be good enough for as long as 2 hours. Finally, finite element based simulation was performed using ANSYS to get a theoretical perception of our experimental findings.

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Publication details

The article was received on 15 Jun 2017, accepted on 11 Sep 2017 and first published on 12 Sep 2017


Article type: Paper
DOI: 10.1039/C7CP04038E
Citation: Phys. Chem. Chem. Phys., 2017, Accepted Manuscript
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    Perovskite Beyond Photovoltaics: Field Emission from Morphology Tailored Nanostructured Methylammonium Lead Triiodide

    K. K. Chattopadhyay, N. Besra, S. Pal and B. K. Das, Phys. Chem. Chem. Phys., 2017, Accepted Manuscript , DOI: 10.1039/C7CP04038E

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