6533b86cfe1ef96bd12c88fa

RESEARCH PRODUCT

Investigation of a Ge nanoparticle film by means of electron stimulated photon emission spectroscopy

Katerina MedjanikS. ChernovD.v. ShapkoGerd SchönhenseWilfried SchulzeAlisa ChernenkayaI. Yu. ProtsenkoSergej A. Nepijko

subject

RadiationMaterials scienceAstrophysics::Cosmology and Extragalactic AstrophysicsElectronLiquid nitrogenCondensed Matter PhysicsAtomic and Molecular Physics and OpticsSpectral lineElectronic Optical and Magnetic MaterialsField electron emissionLight emissionEmission spectrumPhysical and Theoretical ChemistryAtomic physicsSpectroscopySpectroscopyExcitation

description

Abstract Electron stimulated photon emission spectroscopy was used for the study of the electronic structure of Ge nanoparticles. A nanoparticle film was prepared by thermal deposition on a quartz substrate. Photon emission was stimulated by electron bombardment at energies of several hundred electron volts. Electron field emission from a W-tip was used at tip voltage U t  = 100–600 eV. A spectrometer in combination with a liquid nitrogen cooled charge-coupled device (CCD) camera was used for light detection. Light emission spectra were measured in the energy range 1.18–4.2 eV. They are characterized by features at ∼1.6 and ∼3.1 eV. A comparison with light emission spectra obtained with another excitation, i.e. by applying a voltage of U f  = 2 V to the Ge nanoparticle film gives further insight into the mechanism of photon emission.

yearjournalcountryeditionlanguage
2014-03-01Journal of Electron Spectroscopy and Related Phenomena
https://doi.org/10.1016/j.elspec.2014.03.006