Broadband Ce(III)-Sensitized Quantum Cutting in Core-Shell Nanoparticles : Mechanistic Investigation and Photovoltaic Application
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
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Original language | English |
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Pages (from-to) | 5099-5104 |
Journal / Publication | Journal of Physical Chemistry Letters |
Volume | 8 |
Issue number | 20 |
Online published | 5 Oct 2017 |
Publication status | Published - 19 Oct 2017 |
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Abstract
Quantum cutting in lanthanide-doped luminescent materials is promising for applications such as solar cells, mercury-free lamps, and plasma panel displays because of the ability to emit multiple photons for each absorbed higher-energy photon. Herein, a broadband Ce3+-sensitized quantum cutting process in Nd3+ ions is reported though gadolinium sublattice-mediated energy migration in a NaGdF4:Ce@NaGdF4:Nd@NaYF4 nanostructure. The Nd3+ ions show downconversion of one ultraviolet photon through two successive energy transitions, resulting in one visible photon and one near-infrared (NIR) photon. A class of NaGdF4:Ce@NaGdF4:Nd/Yb@NaYF4 nanoparticles is further developed to expand the spectrum of quantum cutting in the NIR. When the quantum cutting nanoparticles are incorporated into a hybrid crystalline silicon (c-Si) solar cell, a 1.2-fold increase in short-circuit current and a 1.4-fold increase in power conversion efficiency is demonstrated under short-wavelength ultraviolet irradiation. These insights should enhance our ability to control and utilize spectral downconversion with lanthanide ions.
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Broadband Ce(III)-Sensitized Quantum Cutting in Core-Shell Nanoparticles: Mechanistic Investigation and Photovoltaic Application. / Sun, Tianying; Chen, Xian; Jin, Limin et al.
In: Journal of Physical Chemistry Letters, Vol. 8, No. 20, 19.10.2017, p. 5099-5104.
In: Journal of Physical Chemistry Letters, Vol. 8, No. 20, 19.10.2017, p. 5099-5104.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review