DEVICE FOR PRODUCING PHOTOELECTRONIC EMISSION INTO VACUUM Russian patent published in 2005 - IPC

Abstract RU 2249877 C2

FIELD: electrovacuum electronic engineering; semiconductor photoemissive devices operating in visible and close-to-ultraviolet region.

SUBSTANCE: proposed device that can be used to develop new class of effective photoemissive instruments around wide-range semiconductors has semiconductor material layer based on nitrides of third-group elements of electron conductivity with concentration of minimum 5·10¹⁶ cm^-3, forbidden gap width Eg, electron affinity χ, and electron work function ϕ on working surface of mentioned semiconductor material turned into vacuum and activated by alkali metal or its oxide meeting relationship E_g > χ, eV; χ > ϕ, eV.

EFFECT: enlarged spectral range and enhanced reproducing ability of spectral characteristics.

19 cl, 9 dwg

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RU 2 249 877 C2

Authors

Afanas'Ev I.V.

Benemanskaja G.V.

Vikhnin V.S.

Frank-Kamenetskaja G.Eh.

Shmidt N.M.

Dates

2005-04-10—Published

2003-04-29—Filed