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Open AccessArticle

Effect of Donor-Acceptor Concentration Ratios on Non-Radiative Energy Transfer in Zero-Dimensional Cs4PbBr6 Perovskite/MEH-PPV Nanocomposite Thin Films

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Department of Physics & Astronomy, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
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Department of Physics, Faculty of Science, Sana′a University, Sana′a P.O. Box 12544, Yemen
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Department of Physics, Faculty of Science, Ibb University, Ibb P.O. Box 70270, Yemen
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King Abdullah Institute for Nanotechnology, King Saud University, Riyadh 11451, Saudi Arabia
*
Author to whom correspondence should be addressed.
Polymers 2020, 12(2), 444; https://doi.org/10.3390/polym12020444 (registering DOI)
Received: 29 December 2019 / Revised: 7 February 2020 / Accepted: 10 February 2020 / Published: 13 February 2020
(This article belongs to the Special Issue Conjugated Oligomers and Polymer Nanomaterials)
Composite materials with different concentration ratios of a hybrid of zero-dimensional (0-D) Cs4PbBr6 perovskite, which acts as a donor (D), and poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV), which acts as an acceptor (A), were successfully prepared via a solution blending method prior to being deposited onto glass substrates by a spin-coating technique. The influence of acceptor content on the structural, optical, and energy transfer properties of the donor was investigated. The perovskite nanocrystals formed thin films without any chemical interactions within a matrix of MEH-PPV in the blend. The possibility of dipole–dipole (non-radiative) energy transfer from the 0-D Cs4PbBr6 to the MEH-PPV was proven. The energy transfer parameters such as Ro (critical distance of the energy transfer), kapp (apparent quenching constant), ∅DA (quantum yield of D in the presence of A), τDA (lifetime of D in the presence of A), PDA (probability of energy transfer), η (efficiency of energy transfer), RDA (energy transfer radius), kET (energy transfer rate constant), TDR (total decay rate), Ao (critical concentration of A), and Aπ (conjugation length) were calculated based on the absorption and emission measurements.
Keywords: 0-D Cs4PbBr6 perovskite; MEH-PPV; optical properties; donor/acceptor; energy transfer 0-D Cs4PbBr6 perovskite; MEH-PPV; optical properties; donor/acceptor; energy transfer
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MDPI and ACS Style

Al-Asbahi, B.A.; Qaid, S.M.H.; Al dwayyan, A.S.A. Effect of Donor-Acceptor Concentration Ratios on Non-Radiative Energy Transfer in Zero-Dimensional Cs4PbBr6 Perovskite/MEH-PPV Nanocomposite Thin Films. Polymers 2020, 12, 444.

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