Die Eigenschaften einer Reihe von Phosphoren unter UV‐Anregung werden im Hinblick auf die Entwicklung von Dreifarbenphosphoren für die Anwendung in Gasentladungsdisplays zur Farbfernsehbildwiedergabe untersucht.
The behavior of phosphors under low voltage (less than 100V) cathode ray excitation is investigated. A phosphor coated on an anode plate is excited by low voltage cathode rays from two line cathodes. Brightness increases as the distance between the anode and the cathodes decreases. Most phosphors used here show high brightness when mixed with conductive materials such as
In2O3
or
SnO2
. The smaller diameter of
In2O3
mixed with
Y2O2S:normalEu
, the lower added amount of
In2O3
necessary for maximum brightness.
normalZnS:normalCu,normalAl
coated with
SnO2
shows maximum brightness when the added amount of
SnCl4
is 100 w/o and the sample is fired at 700°C.
false(Lax,Lu1−xfalse)InO3:normalEu
shows spectrum variations according to the change of
x
and Eu concentration. The peak wavelength of
LaInO3:normalEu
changes to longer wavelength when the phosphor is sulfurized into
LaInO2S:normalEu
, which is a similar phenomenon to that shown by
Y2O3:normalEu
and sulfurized
Y2O2S:normalEu
under conventional high voltage cathode ray excitation.
Die Helligkeit eines auf eine Anodenplatte aufgebrachten und mit 100 Vangeregten Phosphors nimmt mit geringer werdendem Abstand zwischen Anode und Kathode zu.
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