Near-Infrared Quantum Cutting Nanophosphors for Solar Cells

Abstract:

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An efficient near-infrared (NIR) quantum cutting (QC) nanophospors with Ce3+, Yb3+ codoped in CaF2 had been synthesized by hydrothermal method and characterized by X-ray powder diffraction, scanning electron microscope, transmission electron microscopy, photoluminescence spectra and decay dynamics. The nanoparticles were uniform and monodisperse. Under the excitation of 5d level of Ce3+, an intense NIR emission at 900-1050nm was observed which match to the energy of Si band gap of Si - based solar cells. In the Ce3+, Yb3+ codoped CaF2, the lifetime of Ce3+ decreases Superscript textand the quantum efficiency (QE) increases with increasing Yb3+ concentration.

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Periodical:

Edited by:

Helen Zhang and David Jin

Pages:

173-176

DOI:

10.4028/www.scientific.net/AMR.366.173

Citation:

S. W. Li "Near-Infrared Quantum Cutting Nanophosphors for Solar Cells", Advanced Materials Research, Vol. 366, pp. 173-176, 2012

Online since:

October 2011

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$35.00

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