Abstract
-doped glass and glass ceramic containing ZnO nanocrystals were prepared by the melting–quenching method and subsequent heat treatment. Intense near-IR emission around that originated from the transition of was generated as a result of energy transfer from oxygen interstitials in ZnO nanocrystals to with energy transfer efficiency of about 10%. The quantum yield for the near-IR emission of under the excitation of was about 16.7%. These materials have potential application in achieving high-efficiency Si solar cells via spectrum modification.
© 2011 Optical Society of America
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