Phys. Rev. Lett. 50, 750–754 (1983)Light Emission from Electron-Injector StructuresReceived 14 December 1982; published in the issue dated 7 March 1983 Surface-plasmon-polariton-mediated luminescence is observed when electrons are injected into thin Al films from the conduction band of SiO2. These electron-injector structures are strikingly similar to light-emitting tunnel junctions, although tunneling can be ruled out as the driving mechanism. The emission arises from the energy relaxation of the steady-state hot-electron distribution which exists in the metal under continuous current injection. The same mechanism must explain much of the luminescence from tunnel junctions. © 1983 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.50.750
DOI:
10.1103/PhysRevLett.50.750
PACS:
73.40.Ns, 71.36.+c, 73.40.Gk, 78.60.Fi
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