Non-green anti-stokes luminescent substance
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United States of America Patent
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Oct 12, 2004
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app pub date -
Nov 8, 1999
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Mar 5, 1997
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Abstract
Non-green anti-Stokes luminescent material, comprising the elements Ln, erbium (Er) and ytterbium (Yb), Ln representing at least one element which is selected from the group consisting of yttrium (Y), gadolinium (Gd), scandium (Sc) and lanthanum (La), a process for its production and its use.
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