公开(公告)号：US20240266134A1

公开(公告)日：2024-08-08

申请号：US17926139

申请日：2021-05-17

Applicant: DBT GMBH

Inventor： THEODOR DOLL

IPC: H01J1/34 ,  G01N27/64 ,  H01J3/02

CPC classification number: H01J1/34 ,  G01N27/64 ,  H01J3/021 ,  H01J2201/3425

Abstract: An electron emitter structure includes an electron emission layer which is arranged to have a first side and a second side, and an electron accelerating structure which is arranged on the first side of the electron emission layer. The electron emission layer has a mixture of metals so as to be atmospherically stable. The electron accelerating structure has at least one electrode which is electrically insulated from the electron accelerating structure so as to form an acceleration path which allows electrons which are released from the electron emission layer to be selectively accelerated upon generation of an adjustable electric field. The acceleration path has a length l of from 10 nm to 1 μm.