H - Electricity – 01 – L
Patent
H - Electricity
01
L
356/178, 316/41
H01L 49/00 (2006.01) H01J 1/13 (2006.01) H01J 1/308 (2006.01) H01J 1/32 (2006.01) H01J 1/34 (2006.01)
Patent
CA 1232086
13 ABSTRACT: Device for electron emission provided with an electron- emitting body having a layer of material reducing the work function and method of forming such a layer of material reducing the work function. An electron-emitting surface is provided with a material reducing the electron work function, which is obtained from a suitable reaction. The reaction mixture or the product to be decomposed, for example CsN3 (21), is present in a container constituted by a semiconductor body (20), which is provided, if required, with a depres- sion (33), while one or more pn junctions (23) act as a heating diode. Upon heating, the desired material (for example Cs) is released and is deposited on an electron- emitting surface.
483813
Hoeberechts Arthur M.e.
Tolner Harm
Van Gorkom Gerardus G.p.
Van Hal Henricus A.m.
N.v.philips'gloeilampenfabrieken
Van Steinburg C.e.
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