Insights into Er3+ ↔Yb3+ energy transfer dynamics upon infrared ~1550 nm excitation in a low phonon fluoro-tellurite glass system

BALAJI, Sathravada, GHOSH, Debarati, BISWAS, Kaushik, ALLU, Amarnath R, GUPTA, Gaurav and ANNAPURNA, Kalyandurg (2017). Insights into Er3+ ↔Yb3+ energy transfer dynamics upon infrared ~1550 nm excitation in a low phonon fluoro-tellurite glass system. Journal of Luminescence, 187, 441-448.

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Official URL: https://www.sciencedirect.com/science/article/pii/...
Link to published version:: https://doi.org/10.1016/j.jlumin.2017.03.059
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    Abstract

    Highly upconverting, monolithic transparent inorganic glass co-doped with Er3+/Yb3+ ions have been explored in view of their easy integration with Si-PV cell. A ~4 fold enhancement in the photo-current of mc-Si-PV cell has been observed using a Er3+/Yb3+ co-doped sample compared to Er3+ ions singly doped glass. The role of Yb3+ ions on the enhancement of photo-current has been discussed in light of the Er3+↔Yb3+ energy transfer mechanism involved from IR to NIR and VIS upconversion process upon IR ~1550 nm excitation. The influence of excitation pump power and donor Er3+ ion concentration on the energy transfer upconversion (ETU) as well as excited state absorption (ESA) energy transfer mechanisms and its effect on the upconversion emission properties have been described in detail. The prominence of ETU or ESA process were elaborated considering the decay dynamics of NIR upconversion emission upon ~1550 nm excitation.

    Item Type: Article
    Uncontrolled Keywords: 0205 Optical Physics; 0306 Physical Chemistry (incl. Structural); Applied Physics
    Identification Number: https://doi.org/10.1016/j.jlumin.2017.03.059
    Page Range: 441-448
    SWORD Depositor: Symplectic Elements
    Depositing User: Symplectic Elements
    Date Deposited: 18 May 2021 16:29
    Last Modified: 18 May 2021 16:30
    URI: http://shura.shu.ac.uk/id/eprint/27130

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