Influence of exposure to electron beams and hydrogenation on the optical properties of multilayer CaF2/Si/CaF2/Si(111) nanostructures
Creators
- 1. Scientific-practical material research centre, National academy of science of Belarus, Minsk (Belarus)
- 2. Rzhanov institute of semiconductor physics, Siberian branch of Russian academy of sciences, Novosibirsk (Russian Federation)
- 3. Novosibirsk state technical university, Novosibirsk (Russian Federation)
Description
The optical characteristics of structures with alternating CaF2 and Si nanolayers produced by molecular beam epitaxy on Si(111) substrates are studied. It was found that the action of electron beam an energy of ~ 20 keV and a current density of 50 μA/cm2 on the forming of CaF2 and Si nanolayers during epitaxy leads to the modification of CaF2/Si/CaF2/Si(111) nanostructures with the formation of CaSi2 compounds. In the Raman spectra narrow lines were found at frequencies of ~ 342, 385, and 413 cm-1, corresponding to vibrational modes for one of the polymorphic phases CaSi2. It was found that hydrogenation leads to the formation of structural defects, causing an increase on intensity of the band in the spectral region of ~ 0.8 eV in low temperature spectra (~ 78 K) photoluminescence of CaF2/Si/CaF2/Si(111) nanostructures. (authors)
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Additional details
Additional titles
- Original title (Russian)
- Влияние воздействия электронных пучков и гидрогенизации на оптические характеристики многослойных наноструктур CaF<суб>2</суб>/Си/CaF<суб>2</суб>/Си(111)
Publishing Information
- Imprint Place
- Minsk (Belarus)
- Imprint Title
- Interaction of radiation with solids. Proceedings of 14. International conference, dedicated to the 100th anniversary of the Belarusian state university
- Imprint Pagination
- 618 p.
- Journal Page Range
- p. 476-480
- ISSN
- 2706-9060
- Report number
- INIS-BY--108
Conference
- Title
- 14. International conference 'Interaction of radiation with solids'
- Original Conference Title
- 14. Mezhdunarodnaya konferentsiya 'Vzaimodejstvie izluchenij s tverdym telom'
- Dates
- 21 Sep - 24 Sep 2021
- Place
- Minsk (Belarus)
INIS
- Country of Publication
- Belarus
- Country of Input or Organization
- Belarus
- INIS RN
- 54123863
- Subject category
- S77: NANOSCIENCE AND NANOTECHNOLOGY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- CALCIUM FLUORIDES; CALCIUM SILICIDES; CRYSTAL DEFECTS; CURRENT DENSITY; ELECTRON BEAMS; HYDROGENATION; KEV RANGE 10-100; MOLECULAR BEAM EPITAXY; NANOSTRUCTURES; OPTICAL PROPERTIES; PHOTOLUMINESCENCE; PHYSICAL RADIATION EFFECTS; RAMAN SPECTRA; SILICON; SUBSTRATES
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; BEAMS; CALCIUM COMPOUNDS; CALCIUM HALIDES; CHEMICAL REACTIONS; CRYSTAL GROWTH METHODS; CRYSTAL STRUCTURE; ELEMENTS; EMISSION; ENERGY RANGE; EPITAXY; FLUORIDES; FLUORINE COMPOUNDS; HALIDES; HALOGEN COMPOUNDS; KEV RANGE; LEPTON BEAMS; LUMINESCENCE; PARTICLE BEAMS; PHOTON EMISSION; PHYSICAL PROPERTIES; RADIATION EFFECTS; SEMIMETALS; SILICIDES; SILICON COMPOUNDS; SPECTRA
Optional Information
- Notes
- 10 refs., 4 figs. Imprint:Vzaimodejstvie izluchenij s tverdym telom. Materialy 14. Mezhdunarodnoj konferentsii, posvyashchennoj 100-letiyu Belorusskogo gosydarstvennogo universitena