Photocathode

Details Photocathode Photocathode

1982-11-04

1985-08-20

DeMeo, Palmer

Electric lamp and discharge devices

Photosensitive

Having photocathode on tube wall

313544, H01J 4016, H01J 4006

Patent

active

045366799

ABSTRACT:
The photocathode is of the type which comprises a photo-emissive layer consisting of at least an active layer of the P-type, a solid support for said semiconductor of a material which is transparent to radiation, a layer having a bonding glass for the photo-emissive layer on the support. The invention is characterized in that the support comprises two parts situated one on top of the other and which are bonded together, namely a thick second part (thickness for example 5 mm) of a type of glass having properties of thermal expansion which are substantially identical to those of the bonding glass and a part in the form of a disk-shaped first part (thickness for example 1 mm) of a material having softening and transition points which are much higher than those of the bonding glass and of the glass of the thick part.

REFERENCES:
patent: 4008402 (1977-02-01), O'Keeffe et al.
patent: 4038576 (1977-07-01), Hallais et al.
patent: 4311743 (1982-01-01), Kasper et al.
patent: 4490605 (1984-12-01), Dolizy et al.

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