Experimental evidence for quantum cutting co-operative energy transfer process in Pr3+/Yb3+ ions co-doped fluorotellurite glass: dispute over energy transfer mechanism

BALAJI, Sathravada, GHOSH, Debarati, BISWAS, Kaushik, GUPTA, Gaurav and ANNAPURNA, Kalyandurg (2016). Experimental evidence for quantum cutting co-operative energy transfer process in Pr3+/Yb3+ ions co-doped fluorotellurite glass: dispute over energy transfer mechanism. Physical Chemistry Chemical Physics, 18 (48), 33115-33125.

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Official URL: https://pubs.rsc.org/en/content/articlelanding/201...
Link to published version:: https://doi.org/10.1039/c6cp06412d
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    Abstract

    Pr3+/Yb3+ doped materials have been widely reported as quantum-cutting materials in recent times. However, the question of the energy transfer mechanism in the Pr3+/Yb3+ pair in light of the quantum-cutting phenomenon still remains unanswered. In view of that, we explored a series of Pr3+/Yb3+ co-doped low phonon fluorotellurite glass systems to estimate the probability of different energy transfer mechanisms. Indeed, a novel and simple way to predict the probability of the proper energy transfer mechanism in the Pr3+/Yb3+ pair is possible by considering the donor Pr3+ ion emission intensities and the relative ratio dependence in the presence of acceptor Yb3+ ions. Moreover, the observed results are very much in accordance with other estimated results that support the quantum-cutting phenomena in Pr3+/Yb3+ pairs, such as sub-linear power dependence of Yb3+ NIR emission upon visible ∼450 nm laser excitation, integrated area of the donor Pr3+ ion's visible excitation spectrum recorded by monitoring the acceptor Yb3+ ion's NIR emission, and the experimentally obtained absolute quantum yield values using an integrating sphere setup. Our results give a simple way of estimating the probability of an energy transfer mechanism and the factors to be considered, particularly for the Pr3+/Yb3+ pair.

    Item Type: Article
    Uncontrolled Keywords: 02 Physical Sciences; 03 Chemical Sciences; 09 Engineering; Chemical Physics
    Identification Number: https://doi.org/10.1039/c6cp06412d
    Page Range: 33115-33125
    SWORD Depositor: Symplectic Elements
    Depositing User: Symplectic Elements
    Date Deposited: 21 Apr 2021 15:54
    Last Modified: 21 Apr 2021 15:54
    URI: http://shura.shu.ac.uk/id/eprint/27133

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