FIELD: electronics. SUBSTANCE: device has electron source which includes material having the surface exhibiting very low negative affinity to electron, for example diamond, type 11-B, with crystallographic plane III. Electron sources with geometrical nonuniformities which have radius of curvature exceeding 1000 A improve electronic emission level and reduced requirements for characteristics of apices/edges. Electronic devices using such electron sources include image generation electronic devices, light source electronic devices and electronic devices which amplify information signals. EFFECT: improved level of electronic emission. 10 cl, 17 dwg
