The PDP would be the most promising that panel displays for high definition television (HDTV)

wall-hanging TV

because the size can be increased relatively easily and it also offers fast response

a wide viewing angle and other advantages. In PDPs

three primary color phosphors are excited by more energetic vacuum ultraviolet (VUV) radiation of wavelengths of 130

147 and 172nm from inert gas plasma. PDP phosphors are exposed to the VUV of high energy and high intensity. Thus the radiation stability of phosphors should be considered seriously. The color center and surface defects of phosphor caused by the radiation will decrease luminescence efficiency. In the paper

the radiation properties of PDP phosphors were studied by 147nm excitation. These PDP phosphors are (Y

Gd)BO

3

:Eu(red)

Zn

2

SiO

4

:Mn (green)

(Ba

Sr) O·nAl

2

O

3

:Mn (green) and (Ba

Mg)O·nAl

2

O

3

:Eu

2+

(blue). We have observed the decay of (Y

Gd)BO

3

:Eu is the smallest amount the four phosphors; the decay of (Ba

Mg)O·nAl2O:Eu

2+

is the fastest at the beginning

then the decay speed change slower. It may be the Eu

2+

in (Ba

Mg)O·nAl

2

O

3

:Eu

2+

is unstable

because it could be oxidized to Eu

3+

under the VUV radiation. We have found that the brightness of Zn

2

SiO

4

:Mn(green) and (Ba

Sr)O·nAl

2

O

3

:Mn rise at first

then decay down; the decay of Zn

2

SiO

4

:Mn is slower than that of (Ba

Sr)O·nAlO3:Mn

but the brightness of (Ba

Sr)O· nAl

2

O

3

:Mn is higher than Zn

2

SiO

4

:Mn. The performance of the commercial PDP phosphors is still not good enough for practical application. For the wide spread acceptance of the PDP

new phosphors should be developed in the near future.