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Structural and optical properties of ionic liquid based hybrid perovskitoid: a combined experimental and theoretical investigation

Thawarkar, Sachin, Rondiya, Sachin R., Rana, Prem Jyoti Singh, Narayan, Ramanuj, Dzade, Nelson Y. and Singh, Surya Prakash 2021. Structural and optical properties of ionic liquid based hybrid perovskitoid: a combined experimental and theoretical investigation. Functional Materials Letters 14 (4) , 2150008. 10.1142/S1793604721500089

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Abstract

Herein, we report a novel layered lead bromide, (CH3CH2)3N+Br−(CH2)2NH+3)PbBr3, where bulky organic cations, (CH3CH2)3N+Br−(CH2)2NH+3), amino-ethyl triethyl ammonium [aetriea] were not only incorporated between the inorganic layers but also sandwiched within the inorganic [PbBr6]4− 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 ∼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.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Publisher: World Scientific Publishing
ISSN: 1793-6047
Funders: EPSRC
Date of First Compliant Deposit: 20 April 2021
Date of Acceptance: 12 February 2021
Last Modified: 15 Jul 2021 10:56
URI: http://orca.cardiff.ac.uk/id/eprint/140557

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