Journal
RSC ADVANCES
Volume 6, Issue 9, Pages 7544-7552Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra18479g
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Funding
- National Science Foundation of China [51372214, 61233010]
- Department of Science and Technology of Hunan Province of China [2014FJ3124]
- State Key Laboratory of Rare Earth Resources Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Science [RERU2013017]
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Efficient Ca14Zn6Al10O35: Mn4+, Nd3+/Yb3+ spectral conversion materials have been prepared by a sol-gel method. The Ca14Zn6Al10O35: Mn4+, Nd3+/Yb3+ materials can efficiently shift the short-wavelength sunlight in 250-550 nm spectral regions into near infrared emission which matches the higher sensitivity region of Si-based solar cells. The maximal energy transfer efficiency is 76.0% and 80.4% in Mn4+, Nd3+ and Mn4+, Yb3+ co-doped samples when excited at 460 nm, respectively. A dipole-dipole interaction is responsible for the energy transfer sensitization processes from Mn4+ to Nd3+/Yb3+ ions, which has been confirmed by Dexter's theory and the Yokota-Tanimoto model.
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