Device for electron emission provided with an...

H - Electricity – 01 – L

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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

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