Enhancing upconversion of Nd3+ through Yb3+-mediated energy cycling towards temperature sensing
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
Related Research Unit(s)
Detail(s)
Original language | English |
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Pages (from-to) | 1506-1511 |
Journal / Publication | Journal of Rare Earths |
Volume | 39 |
Issue number | 12 |
Online published | 7 Jul 2021 |
Publication status | Published - Dec 2021 |
Link(s)
Abstract
Photon upconversion of lanthanides has been a powerful means to convert low-energy photons into high-energy ones. However, in contrast to the mostly investigated lanthanide ions, it has remained a challenge for the efficient upconversion of Nd3+ due to the deleterious concentration quenching effect. Here we report an efficient strategy to enhance the upconversion of Nd3+ through the Yb3+-mediated energy cycling in a core-shell-shell nanostructure. Both Nd3+ and Yb3+ are confined in the interlayer, and the presence of Yb3+ in the Nd-sublattice provides a more matched energy for the upconversion transitions occurring at the intermediate state of Nd3+ towards much better population at its emissive levels. Moreover, this design also minimizes the possible cross-relaxation processes at both intermediate level and the emissive levels of Nd3+ which are the primary factors limiting the upconversion performance for the Nd3+-doped materials. Such energy cycling-enhanced upconversion shows promise in temperature sensing.
Research Area(s)
- Core-shell nanostructure, Energy cycling, Nd3+, Rare earths, Temperature sensing, Upconversion
Citation Format(s)
Enhancing upconversion of Nd3+ through Yb3+-mediated energy cycling towards temperature sensing. / Song, Nan; Liu, Songbin; Zhang, Peng et al.
In: Journal of Rare Earths, Vol. 39, No. 12, 12.2021, p. 1506-1511.
In: Journal of Rare Earths, Vol. 39, No. 12, 12.2021, p. 1506-1511.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review