Solid-state image intensifier and x-ray examination apparatus co

Details Solid-state image intensifier and x-ray examination apparatus co Solid-state image intensifier and x-ray examination apparatus co

1995-08-10

1997-12-16

Glick, Edward J.

Radiant energy

Invisible radiation responsive nonelectric signalling

Luminescent device

250214LA, 378 988, H01L 3100, H05B 3314

Patent

active

056988583

ABSTRACT:
A solid-state image intensifier is provided with a thin film photoconductive layer and an electroluminescent layer which contains a polymer light emitting diode (LED) material. The photoconductive layer is a thin film which does not suffer from electrical breakdown because a low voltage is applied to the electrodes, said low voltage being sufficient to cause luminescence of the electroluminescence layer. As the photoconductive layer is thin the time response of the solid state image intensifier is shortened and its spatial resolution is improved. The color of the light given off by the polymer LED material is controlled by suitable chemical substitutions to the polymer. Consequently, the color of the light given off may be adapted to the color dependence of the sensitivity of an image sensor for detecting the output light of the solid-state image intensifier.

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"Light-emitting Diodes Based On Conjugated Polymers", by J.H. Burroughs et al, Letters to Nature, vol. 347, Oct. 11, 1990, pp. 539-541.

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