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. ORCID: https://orcid.org/0000-0001-7733-9473 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:	Schools > Chemistry Professional Services > Advanced Research Computing @ Cardiff (ARCCA)
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:	08 May 2023 21:37
URI:	https://orca.cardiff.ac.uk/id/eprint/140557

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