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

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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
Issue number4
StatePublished - May 2021

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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