Abstract

Cr³⁺/Yb³⁺ codoped Y₃Al₅O₁₂ (i.e., YAG) thin films are prepared by pulsed laser deposition. The films are characterized by X-ray diffraction, atomic force microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, and photoluminescence spectra. Excitation at 446 or 587 nm, a broadband emission in the range of 610–800 nm, and an intense near-infrared at 1030 nm are obtained, showing cooperative energy transfer from Cr³⁺ to Yb³⁺ ions in the Cr³⁺/Yb³⁺ codoped YAG thin films; energy transfer efficiency is 71%. The YAG films may have potential application to enhance the efficiency of silicon solar cells.

© 2015 Chinese Laser Press

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