Phosphor and imaging device using the same
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United States of America Patent
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Jun 22, 2004
Grant Date -
May 22, 2003
app pub date -
Jun 27, 2002
filing date -
Nov 20, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The present invention provides a green emitting phosphor which includes an excess of the ordinary SiO.sub.2 component included in parent material Y.sub.2-2x SiO.sub.5 activated by Tb in terms of stoichiometric ratio. The composition of the above phosphor is represented by chemical formula: {(Y.sub.1-y-z M.sub.y Gd.sub.z).sub.1-x Tb.sub.x }.sub.2 (Si.sub.1-b Ge.sub.b O.sub.2).sub.1+a O.sub.3 where values of x, y, z, a, and b are assigned, subject to 0
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