Hitachi, Ltd.

Nippon Hoso' Kyokai

Saiichi Koizumi

Tadaaki Hirai

Eiichi Maruyama

Keiichi Shidara

Hiroaki Hachino

Naohiro Goto

Yukinao Isozaki

Yasushi Saitoh

An image pickup tube target wherein a rectifying contact which is formed at a boundary of a first layer of a material selected from the group consisting of tin oxide, indium oxide, titanium oxide, cadmium sulfide, zinc sulfide, cadmium selenide, zinc selenide, n-type germanium, n-type silicon and mixture thereof, and a second layer of a material mainly consisting of selenium and including halogen, is reversely biased and operated at a region where signal current is saturated with respect to applied voltage. The second layer of the material includes 50 atomic percent or more of selenium and 0.1 - 1000 atomic ppm of halogen. More preferably, the second layer comprises 3-20 atomic % of arsenic, 0.1-20 atomic ppm of iodine and balance mainly consisting of selenium.

Photoconductive target of an image pickup tube and method for

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Tokyo, Japan

Saiichi Koizumi