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Broadband Absorption and Near-Infrared Quantum Cutting in Ce3 +–Tb3 +–Yb3 + Co-Doped Y4Si2O7N2 Phosphor via Energy Transfer

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In this work, Ce3+–Tb3+–Yb3+ co-doped Y4Si2O7N2 phosphor has been prepared, and the luminescence properties have been investigated. Broadband absorption can be realized by the Ce3+ ions in the oxynitride host Y4Si2O7N2, and the Ce3+–Tb3+–Yb3+ ions coupled via the energy transfer can cut one photon in the ultraviolet (UV) or visible region into two near-infrared (NIR) region photons, showing potential in modifying the spectral absorption of the Si-based solar cell. The luminescence spectra in both visible and NIR regions and the luminescence decay curves of Tb3+ were recorded to provide direct evidence of energy transfer from Ce3+ to Tb3+ ions, and the subsequent quantum cutting luminescence originated from Tb3+ to Yb3+. The present results give insight into strategies involved in the broad-band absorption based on the Ce3+–Tb3+–Yb3+ couple and the suitable oxynitride host system.
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Document Type: Research Article

Publication date: December 1, 2014

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  • Science of Advanced Materials (SAM) is an interdisciplinary peer-reviewed journal consolidating research activities in all aspects of advanced materials in the fields of science, engineering and medicine into a single and unique reference source. SAM provides the means for materials scientists, chemists, physicists, biologists, engineers, ceramicists, metallurgists, theoreticians and technocrats to publish original research articles as reviews with author's photo and short biography, full research articles and communications of important new scientific and technological findings, encompassing the fundamental and applied research in all latest aspects of advanced materials.
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