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Light emission from Ag cluster films excited by conduction current
Author(s) -
Nepijko S.A.,
Fedorovich R.D.,
Viduta L.V.,
Ievlev D.N.,
Schulze W.
Publication year - 2000
Publication title -
annalen der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.009
H-Index - 68
eISSN - 1521-3889
pISSN - 0003-3804
DOI - 10.1002/(sici)1521-3889(200002)9:2<125::aid-andp125>3.0.co;2-v
Subject(s) - path integral formulation , poisson distribution , quantization (signal processing) , physics , gauge theory , sigma model , mathematical physics , excited state , partition function (quantum field theory) , gauge (firearms) , cluster (spacecraft) , thermal conduction , quantum mechanics , mathematics , quantum , materials science , statistics , nonlinear system , computer science , programming language , metallurgy
The light emission spectra obtained for a silver cluster film, excited by the passage of electrical current through it, were measured by the charge‐coupled device (CCD) combined with a monochromator in the spectral range 200 ≑ 1050 nm (6.2 ≑ 1.18 eV). This film is a two‐dimensional ensemble of Ag clusters linked by tunneling on a dielectric substrate. It was shown that the light emission spectra had a number of features, and the shape of spectrum depends on a voltage applied to the film. With increasing the voltage the spectrum starts to extend to high energies. The light emission in the visible spectral region was observed already at 1 V applied to the film, i.e., the photon energy can exceed the excitation energy. It means that this phenomenon is not trivial. In order to explain these results, an assumption about the electron gas heating in metal clusters may be used.