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World Scientific Publishing, Functional Materials Letters, 04(14), p. 2150008, 2021

DOI: 10.1142/s1793604721500089

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Structural and Optical Properties of Ionic Liquid Based Hybrid Perovskitoid: A Combined Experimental and Theoretical Investigation

This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

Herein, we report a novel layered lead bromide, (CH3CH[Formula: see text]N[Formula: see text]Br[Formula: see text](CH[Formula: see text]NH[Formula: see text]PbBr3, where bulky organic cations, (CH3CH[Formula: see text]N[Formula: see text]Br[Formula: see text](CH[Formula: see text]NH[Formula: see text], amino-ethyl triethyl ammonium [aetriea] were not only incorporated between the inorganic layers but also sandwiched within the inorganic [PbBr6][Formula: see text] octahedral layered structure. The UV-Visible, photoluminescence spectroscopy (PL), X-ray diffraction (XRD) and a field-emission scanning electron microscope (FE-SEM) result show that the new perovskitoid has a microrod shape with an estimated bandgap of [Formula: see text]3.05 eV. The structural and optoelectronic properties of the [aetriea]PbBr3perovskitoid were further corroborated by first-principles density functional theory (DFT) calculations. Thermogravimetric analysis (TGA) data show good stability of the [aetriea]PbBr3perovskitoid. Time-resolved photoluminescence (TRPL) decays from new [aetriea]PbBr3perovskitoid showing 6 ns average lifetime. These results suggest that doubly charged cation hybrid perovskite materials are potential candidates for optoelectronic applications.