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

Sachin Thawarkar, Sachin R. Rondiya, Prem Jyoti Singh Rana, Ramanuj Narayan, Nelson Y. Dzade, Surya Prakash Singh

Research output: Contribution to journalArticlepeer-review

Abstract

Herein, we report a novel layered lead bromide, (CH3CH2)3N+Br−(CH2)2NH3+)PbBr3, where bulky organic cations, (CH3CH2)3N+Br−(CH2)2NH3+), 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]PbBr3 perovskitoid were further corroborated by first-principles density functional theory (DFT) calculations. Thermogravimetric analysis (TGA) data show good stability of the [aetriea]PbBr3 perovskitoid. 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.

Original languageEnglish (US)
Article number2150008
JournalFunctional Materials Letters
Volume14
Issue number4
DOIs
StatePublished - May 2021

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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